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Finding the Fourth Proportional to 169,240.47, 253,795.10 and 90,311.64

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Solution

The fourth proportional to 169,240.47, 253,795.10 and 90,311.64 is: 135,432.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,240.47 : 253,795.10 = 90,311.64 : x
  2. Step 2: Convert to fraction form
    169,240.47/253,795.10 = 90,311.64/x
  3. Step 3: Cross multiply
    169,240.47x = 253,795.10 × 90,311.64
  4. Step 4: Simplify right side
    169,240.47x = 22,920,651,253.41
  5. Step 5: Solve for x
    x = 22,920,651,253.41/169,240.47
  6. Step 6: Final answer
    x = 135,432.45

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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.