Home / 87,972.14-121,402-84,793.70

Finding the Fourth Proportional to 87,972.14, 121,402 and 84,793.70

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Solution

The fourth proportional to 87,972.14, 121,402 and 84,793.70 is: 117,015.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,972.14 : 121,402 = 84,793.70 : x
  2. Step 2: Convert to fraction form
    87,972.14/121,402 = 84,793.70/x
  3. Step 3: Cross multiply
    87,972.14x = 121,402 × 84,793.70
  4. Step 4: Simplify right side
    87,972.14x = 10,294,124,767.40
  5. Step 5: Solve for x
    x = 10,294,124,767.40/87,972.14
  6. Step 6: Final answer
    x = 117,015.74

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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.