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Finding the Fourth Proportional to 125,001.20, 187,501.80 and 115,281.20

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Solution

The fourth proportional to 125,001.20, 187,501.80 and 115,281.20 is: 172,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,001.20 : 187,501.80 = 115,281.20 : x
  2. Step 2: Convert to fraction form
    125,001.20/187,501.80 = 115,281.20/x
  3. Step 3: Cross multiply
    125,001.20x = 187,501.80 × 115,281.20
  4. Step 4: Simplify right side
    125,001.20x = 21,615,432,506.16
  5. Step 5: Solve for x
    x = 21,615,432,506.16/125,001.20
  6. Step 6: Final answer
    x = 172,921.80

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1.5x scale

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.