Home / 128,288,814.10-177,064,283.02-76,106,814.10

Finding the Fourth Proportional to 128,288,814.10, 177,064,283.02 and 76,106,814.10

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Solution

The fourth proportional to 128,288,814.10, 177,064,283.02 and 76,106,814.10 is: 105,042,661.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,288,814.10 : 177,064,283.02 = 76,106,814.10 : x
  2. Step 2: Convert to fraction form
    128,288,814.10/177,064,283.02 = 76,106,814.10/x
  3. Step 3: Cross multiply
    128,288,814.10x = 177,064,283.02 × 76,106,814.10
  4. Step 4: Simplify right side
    128,288,814.10x = 13,475,798,471,552,926
  5. Step 5: Solve for x
    x = 13,475,798,471,552,926/128,288,814.10
  6. Step 6: Final answer
    x = 105,042,661.48

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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.