Home / 138,080,801,428.56-190,523,869,798.83-77,103,786,431.46

Finding the Fourth Proportional to 138,080,801,428.56, 190,523,869,798.83 and 77,103,786,431.46

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Solution

The fourth proportional to 138,080,801,428.56, 190,523,869,798.83 and 77,103,786,431.46 is: 106,387,793,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080,801,428.56 : 190,523,869,798.83 = 77,103,786,431.46 : x
  2. Step 2: Convert to fraction form
    138,080,801,428.56/190,523,869,798.83 = 77,103,786,431.46/x
  3. Step 3: Cross multiply
    138,080,801,428.56x = 190,523,869,798.83 × 77,103,786,431.46
  4. Step 4: Simplify right side
    138,080,801,428.56x = 14,690,111,767,064,279,515,136
  5. Step 5: Solve for x
    x = 14,690,111,767,064,279,515,136/138,080,801,428.56
  6. Step 6: Final answer
    x = 106,387,793,343.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.