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Finding the Fourth Proportional to 159,715.56, 220,407.06 and 91,737

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Solution

The fourth proportional to 159,715.56, 220,407.06 and 91,737 is: 126,596.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,715.56 : 220,407.06 = 91,737 : x
  2. Step 2: Convert to fraction form
    159,715.56/220,407.06 = 91,737/x
  3. Step 3: Cross multiply
    159,715.56x = 220,407.06 × 91,737
  4. Step 4: Simplify right side
    159,715.56x = 20,219,482,463.22
  5. Step 5: Solve for x
    x = 20,219,482,463.22/159,715.56
  6. Step 6: Final answer
    x = 126,596.82

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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.