Home / 128,115,522.12-176,799,591.02-69,378,288.52

Finding the Fourth Proportional to 128,115,522.12, 176,799,591.02 and 69,378,288.52

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Solution

The fourth proportional to 128,115,522.12, 176,799,591.02 and 69,378,288.52 is: 95,742,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,115,522.12 : 176,799,591.02 = 69,378,288.52 : x
  2. Step 2: Convert to fraction form
    128,115,522.12/176,799,591.02 = 69,378,288.52/x
  3. Step 3: Cross multiply
    128,115,522.12x = 176,799,591.02 × 69,378,288.52
  4. Step 4: Simplify right side
    128,115,522.12x = 12,266,053,036,003,562
  5. Step 5: Solve for x
    x = 12,266,053,036,003,562/128,115,522.12
  6. Step 6: Final answer
    x = 95,742,130.49

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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.