Home / 128,343,343.08-177,136,452.82-76,161,151.28

Finding the Fourth Proportional to 128,343,343.08, 177,136,452.82 and 76,161,151.28

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Solution

The fourth proportional to 128,343,343.08, 177,136,452.82 and 76,161,151.28 is: 105,115,823.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,343,343.08 : 177,136,452.82 = 76,161,151.28 : x
  2. Step 2: Convert to fraction form
    128,343,343.08/177,136,452.82 = 76,161,151.28/x
  3. Step 3: Cross multiply
    128,343,343.08x = 177,136,452.82 × 76,161,151.28
  4. Step 4: Simplify right side
    128,343,343.08x = 13,490,916,180,426,602
  5. Step 5: Solve for x
    x = 13,490,916,180,426,602/128,343,343.08
  6. Step 6: Final answer
    x = 105,115,823.36

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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.