Home / 155,942.08-215,191.84-87,957.12

Finding the Fourth Proportional to 155,942.08, 215,191.84 and 87,957.12

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Solution

The fourth proportional to 155,942.08, 215,191.84 and 87,957.12 is: 121,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,942.08 : 215,191.84 = 87,957.12 : x
  2. Step 2: Convert to fraction form
    155,942.08/215,191.84 = 87,957.12/x
  3. Step 3: Cross multiply
    155,942.08x = 215,191.84 × 87,957.12
  4. Step 4: Simplify right side
    155,942.08x = 18,927,654,493.90
  5. Step 5: Solve for x
    x = 18,927,654,493.90/155,942.08
  6. Step 6: Final answer
    x = 121,376.18

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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.