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Finding the Fourth Proportional to 136,031.40, 204,047.10 and 42,565.80

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Solution

The fourth proportional to 136,031.40, 204,047.10 and 42,565.80 is: 63,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,031.40 : 204,047.10 = 42,565.80 : x
  2. Step 2: Convert to fraction form
    136,031.40/204,047.10 = 42,565.80/x
  3. Step 3: Cross multiply
    136,031.40x = 204,047.10 × 42,565.80
  4. Step 4: Simplify right side
    136,031.40x = 8,685,428,049.18
  5. Step 5: Solve for x
    x = 8,685,428,049.18/136,031.40
  6. Step 6: Final answer
    x = 63,848.70

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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.