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Finding the Fourth Proportional to 135,347.54, 186,713.85 and 89,425.20

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Solution

The fourth proportional to 135,347.54, 186,713.85 and 89,425.20 is: 123,363.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,347.54 : 186,713.85 = 89,425.20 : x
  2. Step 2: Convert to fraction form
    135,347.54/186,713.85 = 89,425.20/x
  3. Step 3: Cross multiply
    135,347.54x = 186,713.85 × 89,425.20
  4. Step 4: Simplify right side
    135,347.54x = 16,696,923,379.02
  5. Step 5: Solve for x
    x = 16,696,923,379.02/135,347.54
  6. Step 6: Final answer
    x = 123,363.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.