Home / 159,720.15-220,484.66-103,159.11

Finding the Fourth Proportional to 159,720.15, 220,484.66 and 103,159.11

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Solution

The fourth proportional to 159,720.15, 220,484.66 and 103,159.11 is: 142,405.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,720.15 : 220,484.66 = 103,159.11 : x
  2. Step 2: Convert to fraction form
    159,720.15/220,484.66 = 103,159.11/x
  3. Step 3: Cross multiply
    159,720.15x = 220,484.66 × 103,159.11
  4. Step 4: Simplify right side
    159,720.15x = 22,745,000,778.46
  5. Step 5: Solve for x
    x = 22,745,000,778.46/159,720.15
  6. Step 6: Final answer
    x = 142,405.33

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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.