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Finding the Fourth Proportional to 159,815.16, 220,552.11 and 91,854.18

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Solution

The fourth proportional to 159,815.16, 220,552.11 and 91,854.18 is: 126,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,815.16 : 220,552.11 = 91,854.18 : x
  2. Step 2: Convert to fraction form
    159,815.16/220,552.11 = 91,854.18/x
  3. Step 3: Cross multiply
    159,815.16x = 220,552.11 × 91,854.18
  4. Step 4: Simplify right side
    159,815.16x = 20,258,633,211.32
  5. Step 5: Solve for x
    x = 20,258,633,211.32/159,815.16
  6. Step 6: Final answer
    x = 126,762.90

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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.