Home / 155,847.12-215,070-84,226.96

Finding the Fourth Proportional to 155,847.12, 215,070 and 84,226.96

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Solution

The fourth proportional to 155,847.12, 215,070 and 84,226.96 is: 116,233.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,847.12 : 215,070 = 84,226.96 : x
  2. Step 2: Convert to fraction form
    155,847.12/215,070 = 84,226.96/x
  3. Step 3: Cross multiply
    155,847.12x = 215,070 × 84,226.96
  4. Step 4: Simplify right side
    155,847.12x = 18,114,692,287.20
  5. Step 5: Solve for x
    x = 18,114,692,287.20/155,847.12
  6. Step 6: Final answer
    x = 116,233.73

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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.