Home / 105,909.12-146,149.92-58,159.62

Finding the Fourth Proportional to 105,909.12, 146,149.92 and 58,159.62

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Solution

The fourth proportional to 105,909.12, 146,149.92 and 58,159.62 is: 80,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,909.12 : 146,149.92 = 58,159.62 : x
  2. Step 2: Convert to fraction form
    105,909.12/146,149.92 = 58,159.62/x
  3. Step 3: Cross multiply
    105,909.12x = 146,149.92 × 58,159.62
  4. Step 4: Simplify right side
    105,909.12x = 8,500,023,810.23
  5. Step 5: Solve for x
    x = 8,500,023,810.23/105,909.12
  6. Step 6: Final answer
    x = 80,257.71

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1.5x scale

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.