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Finding the Fourth Proportional to 119,239.62, 178,864.86 and 84,335.10

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Solution

The fourth proportional to 119,239.62, 178,864.86 and 84,335.10 is: 126,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,239.62 : 178,864.86 = 84,335.10 : x
  2. Step 2: Convert to fraction form
    119,239.62/178,864.86 = 84,335.10/x
  3. Step 3: Cross multiply
    119,239.62x = 178,864.86 × 84,335.10
  4. Step 4: Simplify right side
    119,239.62x = 15,084,585,854.59
  5. Step 5: Solve for x
    x = 15,084,585,854.59/119,239.62
  6. Step 6: Final answer
    x = 126,506.49

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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.