Home / 140,565.60-193,985.12-80,135.12

Finding the Fourth Proportional to 140,565.60, 193,985.12 and 80,135.12

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Solution

The fourth proportional to 140,565.60, 193,985.12 and 80,135.12 is: 110,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,565.60 : 193,985.12 = 80,135.12 : x
  2. Step 2: Convert to fraction form
    140,565.60/193,985.12 = 80,135.12/x
  3. Step 3: Cross multiply
    140,565.60x = 193,985.12 × 80,135.12
  4. Step 4: Simplify right side
    140,565.60x = 15,545,020,869.41
  5. Step 5: Solve for x
    x = 15,545,020,869.41/140,565.60
  6. Step 6: Final answer
    x = 110,589.08

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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.