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Finding the Fourth Proportional to 159,838.72, 220,575.20 and 88,220.08

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Solution

The fourth proportional to 159,838.72, 220,575.20 and 88,220.08 is: 121,742.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,838.72 : 220,575.20 = 88,220.08 : x
  2. Step 2: Convert to fraction form
    159,838.72/220,575.20 = 88,220.08/x
  3. Step 3: Cross multiply
    159,838.72x = 220,575.20 × 88,220.08
  4. Step 4: Simplify right side
    159,838.72x = 19,459,161,790.02
  5. Step 5: Solve for x
    x = 19,459,161,790.02/159,838.72
  6. Step 6: Final answer
    x = 121,742.48

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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.