Home / 119,146.13-178,760.20-74,720.87

Finding the Fourth Proportional to 119,146.13, 178,760.20 and 74,720.87

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Solution

The fourth proportional to 119,146.13, 178,760.20 and 74,720.87 is: 112,107.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,146.13 : 178,760.20 = 74,720.87 : x
  2. Step 2: Convert to fraction form
    119,146.13/178,760.20 = 74,720.87/x
  3. Step 3: Cross multiply
    119,146.13x = 178,760.20 × 74,720.87
  4. Step 4: Simplify right side
    119,146.13x = 13,357,117,925.47
  5. Step 5: Solve for x
    x = 13,357,117,925.47/119,146.13
  6. Step 6: Final answer
    x = 112,107.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.