Home / 119,146.90-178,761.35-74,721.64

Finding the Fourth Proportional to 119,146.90, 178,761.35 and 74,721.64

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Solution

The fourth proportional to 119,146.90, 178,761.35 and 74,721.64 is: 112,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,146.90 : 178,761.35 = 74,721.64 : x
  2. Step 2: Convert to fraction form
    119,146.90/178,761.35 = 74,721.64/x
  3. Step 3: Cross multiply
    119,146.90x = 178,761.35 × 74,721.64
  4. Step 4: Simplify right side
    119,146.90x = 13,357,339,973.20
  5. Step 5: Solve for x
    x = 13,357,339,973.20/119,146.90
  6. Step 6: Final answer
    x = 112,108.17

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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.