Home / 128,850,263.28-177,754,561.02-76,609,569.24

Finding the Fourth Proportional to 128,850,263.28, 177,754,561.02 and 76,609,569.24

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Solution

The fourth proportional to 128,850,263.28, 177,754,561.02 and 76,609,569.24 is: 105,686,243.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,850,263.28 : 177,754,561.02 = 76,609,569.24 : x
  2. Step 2: Convert to fraction form
    128,850,263.28/177,754,561.02 = 76,609,569.24/x
  3. Step 3: Cross multiply
    128,850,263.28x = 177,754,561.02 × 76,609,569.24
  4. Step 4: Simplify right side
    128,850,263.28x = 13,617,700,350,187,494
  5. Step 5: Solve for x
    x = 13,617,700,350,187,494/128,850,263.28
  6. Step 6: Final answer
    x = 105,686,243.89

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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.