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Finding the Fourth Proportional to 159,543.66, 220,172.94 and 87,923.10

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Solution

The fourth proportional to 159,543.66, 220,172.94 and 87,923.10 is: 121,335.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,543.66 : 220,172.94 = 87,923.10 : x
  2. Step 2: Convert to fraction form
    159,543.66/220,172.94 = 87,923.10/x
  3. Step 3: Cross multiply
    159,543.66x = 220,172.94 × 87,923.10
  4. Step 4: Simplify right side
    159,543.66x = 19,358,287,420.91
  5. Step 5: Solve for x
    x = 19,358,287,420.91/159,543.66
  6. Step 6: Final answer
    x = 121,335.36

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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.