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Finding the Fourth Proportional to 151,755.76, 209,432.64 and 84,687.76

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Solution

The fourth proportional to 151,755.76, 209,432.64 and 84,687.76 is: 116,874.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,755.76 : 209,432.64 = 84,687.76 : x
  2. Step 2: Convert to fraction form
    151,755.76/209,432.64 = 84,687.76/x
  3. Step 3: Cross multiply
    151,755.76x = 209,432.64 × 84,687.76
  4. Step 4: Simplify right side
    151,755.76x = 17,736,381,152.49
  5. Step 5: Solve for x
    x = 17,736,381,152.49/151,755.76
  6. Step 6: Final answer
    x = 116,874.52

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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.