Home / 140,402.97-193,756.05-76,740.75

Finding the Fourth Proportional to 140,402.97, 193,756.05 and 76,740.75

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Solution

The fourth proportional to 140,402.97, 193,756.05 and 76,740.75 is: 105,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,402.97 : 193,756.05 = 76,740.75 : x
  2. Step 2: Convert to fraction form
    140,402.97/193,756.05 = 76,740.75/x
  3. Step 3: Cross multiply
    140,402.97x = 193,756.05 × 76,740.75
  4. Step 4: Simplify right side
    140,402.97x = 14,868,984,594.04
  5. Step 5: Solve for x
    x = 14,868,984,594.04/140,402.97
  6. Step 6: Final answer
    x = 105,902.21

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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.