Home / 143,720.10-215,580.15-54,927.90

Finding the Fourth Proportional to 143,720.10, 215,580.15 and 54,927.90

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Solution

The fourth proportional to 143,720.10, 215,580.15 and 54,927.90 is: 82,391.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,720.10 : 215,580.15 = 54,927.90 : x
  2. Step 2: Convert to fraction form
    143,720.10/215,580.15 = 54,927.90/x
  3. Step 3: Cross multiply
    143,720.10x = 215,580.15 × 54,927.90
  4. Step 4: Simplify right side
    143,720.10x = 11,841,364,921.19
  5. Step 5: Solve for x
    x = 11,841,364,921.19/143,720.10
  6. Step 6: Final answer
    x = 82,391.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.