Home / 112,397.40-155,101.41-61,399.80

Finding the Fourth Proportional to 112,397.40, 155,101.41 and 61,399.80

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Solution

The fourth proportional to 112,397.40, 155,101.41 and 61,399.80 is: 84,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,397.40 : 155,101.41 = 61,399.80 : x
  2. Step 2: Convert to fraction form
    112,397.40/155,101.41 = 61,399.80/x
  3. Step 3: Cross multiply
    112,397.40x = 155,101.41 × 61,399.80
  4. Step 4: Simplify right side
    112,397.40x = 9,523,195,553.72
  5. Step 5: Solve for x
    x = 9,523,195,553.72/112,397.40
  6. Step 6: Final answer
    x = 84,727.90

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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.