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Finding the Fourth Proportional to 159,553.10, 220,187.87 and 87,937.71

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Solution

The fourth proportional to 159,553.10, 220,187.87 and 87,937.71 is: 121,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,553.10 : 220,187.87 = 87,937.71 : x
  2. Step 2: Convert to fraction form
    159,553.10/220,187.87 = 87,937.71/x
  3. Step 3: Cross multiply
    159,553.10x = 220,187.87 × 87,937.71
  4. Step 4: Simplify right side
    159,553.10x = 19,362,816,617.89
  5. Step 5: Solve for x
    x = 19,362,816,617.89/159,553.10
  6. Step 6: Final answer
    x = 121,356.57

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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.