Home / 143,647.11-215,179.47-66,601.89

Finding the Fourth Proportional to 143,647.11, 215,179.47 and 66,601.89

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Solution

The fourth proportional to 143,647.11, 215,179.47 and 66,601.89 is: 99,767.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,647.11 : 215,179.47 = 66,601.89 : x
  2. Step 2: Convert to fraction form
    143,647.11/215,179.47 = 66,601.89/x
  3. Step 3: Cross multiply
    143,647.11x = 215,179.47 × 66,601.89
  4. Step 4: Simplify right side
    143,647.11x = 14,331,359,391.20
  5. Step 5: Solve for x
    x = 14,331,359,391.20/143,647.11
  6. Step 6: Final answer
    x = 99,767.82

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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.