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Finding the Fourth Proportional to 147,877.61, 204,070.95 and 80,809.61

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Solution

The fourth proportional to 147,877.61, 204,070.95 and 80,809.61 is: 111,517.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,877.61 : 204,070.95 = 80,809.61 : x
  2. Step 2: Convert to fraction form
    147,877.61/204,070.95 = 80,809.61/x
  3. Step 3: Cross multiply
    147,877.61x = 204,070.95 × 80,809.61
  4. Step 4: Simplify right side
    147,877.61x = 16,490,892,861.47
  5. Step 5: Solve for x
    x = 16,490,892,861.47/147,877.61
  6. Step 6: Final answer
    x = 111,517.18

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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.