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Finding the Fourth Proportional to 159,572.71, 220,207.44 and 86,976.31

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Solution

The fourth proportional to 159,572.71, 220,207.44 and 86,976.31 is: 120,025.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,572.71 : 220,207.44 = 86,976.31 : x
  2. Step 2: Convert to fraction form
    159,572.71/220,207.44 = 86,976.31/x
  3. Step 3: Cross multiply
    159,572.71x = 220,207.44 × 86,976.31
  4. Step 4: Simplify right side
    159,572.71x = 19,152,830,565.75
  5. Step 5: Solve for x
    x = 19,152,830,565.75/159,572.71
  6. Step 6: Final answer
    x = 120,025.73

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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.