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Finding the Fourth Proportional to 159,436.65, 220,024.07 and 87,816.93

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Solution

The fourth proportional to 159,436.65, 220,024.07 and 87,816.93 is: 121,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,436.65 : 220,024.07 = 87,816.93 : x
  2. Step 2: Convert to fraction form
    159,436.65/220,024.07 = 87,816.93/x
  3. Step 3: Cross multiply
    159,436.65x = 220,024.07 × 87,816.93
  4. Step 4: Simplify right side
    159,436.65x = 19,321,838,353.51
  5. Step 5: Solve for x
    x = 19,321,838,353.51/159,436.65
  6. Step 6: Final answer
    x = 121,188.19

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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.