Home / 143,721.10-215,581.65-54,928.90

Finding the Fourth Proportional to 143,721.10, 215,581.65 and 54,928.90

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Solution

The fourth proportional to 143,721.10, 215,581.65 and 54,928.90 is: 82,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.10 : 215,581.65 = 54,928.90 : x
  2. Step 2: Convert to fraction form
    143,721.10/215,581.65 = 54,928.90/x
  3. Step 3: Cross multiply
    143,721.10x = 215,581.65 × 54,928.90
  4. Step 4: Simplify right side
    143,721.10x = 11,841,662,894.69
  5. Step 5: Solve for x
    x = 11,841,662,894.69/143,721.10
  6. Step 6: Final answer
    x = 82,393.35

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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.