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Finding the Fourth Proportional to 153,872.01, 230,805.61 and 78,948.92

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Solution

The fourth proportional to 153,872.01, 230,805.61 and 78,948.92 is: 118,422.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,872.01 : 230,805.61 = 78,948.92 : x
  2. Step 2: Convert to fraction form
    153,872.01/230,805.61 = 78,948.92/x
  3. Step 3: Cross multiply
    153,872.01x = 230,805.61 × 78,948.92
  4. Step 4: Simplify right side
    153,872.01x = 18,221,854,019.08
  5. Step 5: Solve for x
    x = 18,221,854,019.08/153,872.01
  6. Step 6: Final answer
    x = 118,422.15

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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.