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Finding the Fourth Proportional to 159,657.05, 220,328.27 and 88,039.61

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Solution

The fourth proportional to 159,657.05, 220,328.27 and 88,039.61 is: 121,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,657.05 : 220,328.27 = 88,039.61 : x
  2. Step 2: Convert to fraction form
    159,657.05/220,328.27 = 88,039.61/x
  3. Step 3: Cross multiply
    159,657.05x = 220,328.27 × 88,039.61
  4. Step 4: Simplify right side
    159,657.05x = 19,397,614,962.77
  5. Step 5: Solve for x
    x = 19,397,614,962.77/159,657.05
  6. Step 6: Final answer
    x = 121,495.51

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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.