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Finding the Fourth Proportional to 159,174.72, 219,663.90 and 87,557.76

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Solution

The fourth proportional to 159,174.72, 219,663.90 and 87,557.76 is: 120,831.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,174.72 : 219,663.90 = 87,557.76 : x
  2. Step 2: Convert to fraction form
    159,174.72/219,663.90 = 87,557.76/x
  3. Step 3: Cross multiply
    159,174.72x = 219,663.90 × 87,557.76
  4. Step 4: Simplify right side
    159,174.72x = 19,233,279,036.86
  5. Step 5: Solve for x
    x = 19,233,279,036.86/159,174.72
  6. Step 6: Final answer
    x = 120,831.24

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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.