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Finding the Fourth Proportional to 103,031.46, 154,270.32 and 65,387.73

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Solution

The fourth proportional to 103,031.46, 154,270.32 and 65,387.73 is: 97,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,031.46 : 154,270.32 = 65,387.73 : x
  2. Step 2: Convert to fraction form
    103,031.46/154,270.32 = 65,387.73/x
  3. Step 3: Cross multiply
    103,031.46x = 154,270.32 × 65,387.73
  4. Step 4: Simplify right side
    103,031.46x = 10,087,386,031.17
  5. Step 5: Solve for x
    x = 10,087,386,031.17/103,031.46
  6. Step 6: Final answer
    x = 97,905.88

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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.