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Finding the Fourth Proportional to 159,542.96, 220,165.98 and 87,921.14

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Solution

The fourth proportional to 159,542.96, 220,165.98 and 87,921.14 is: 121,329.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,542.96 : 220,165.98 = 87,921.14 : x
  2. Step 2: Convert to fraction form
    159,542.96/220,165.98 = 87,921.14/x
  3. Step 3: Cross multiply
    159,542.96x = 220,165.98 × 87,921.14
  4. Step 4: Simplify right side
    159,542.96x = 19,357,243,950.82
  5. Step 5: Solve for x
    x = 19,357,243,950.82/159,542.96
  6. Step 6: Final answer
    x = 121,329.35

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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.