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Finding the Fourth Proportional to 148,892.96, 205,484.88 and 81,838.88

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Solution

The fourth proportional to 148,892.96, 205,484.88 and 81,838.88 is: 112,944.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,892.96 : 205,484.88 = 81,838.88 : x
  2. Step 2: Convert to fraction form
    148,892.96/205,484.88 = 81,838.88/x
  3. Step 3: Cross multiply
    148,892.96x = 205,484.88 × 81,838.88
  4. Step 4: Simplify right side
    148,892.96x = 16,816,652,436.13
  5. Step 5: Solve for x
    x = 16,816,652,436.13/148,892.96
  6. Step 6: Final answer
    x = 112,944.58

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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.