Home / 142,165.30-213,145.55-79,854.90

Finding the Fourth Proportional to 142,165.30, 213,145.55 and 79,854.90

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Solution

The fourth proportional to 142,165.30, 213,145.55 and 79,854.90 is: 119,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,165.30 : 213,145.55 = 79,854.90 : x
  2. Step 2: Convert to fraction form
    142,165.30/213,145.55 = 79,854.90/x
  3. Step 3: Cross multiply
    142,165.30x = 213,145.55 × 79,854.90
  4. Step 4: Simplify right side
    142,165.30x = 17,020,716,580.70
  5. Step 5: Solve for x
    x = 17,020,716,580.70/142,165.30
  6. Step 6: Final answer
    x = 119,724.83

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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.