Home / 124,839.20-187,258.80-91,402.40

Finding the Fourth Proportional to 124,839.20, 187,258.80 and 91,402.40

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Solution

The fourth proportional to 124,839.20, 187,258.80 and 91,402.40 is: 137,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,839.20 : 187,258.80 = 91,402.40 : x
  2. Step 2: Convert to fraction form
    124,839.20/187,258.80 = 91,402.40/x
  3. Step 3: Cross multiply
    124,839.20x = 187,258.80 × 91,402.40
  4. Step 4: Simplify right side
    124,839.20x = 17,115,903,741.12
  5. Step 5: Solve for x
    x = 17,115,903,741.12/124,839.20
  6. Step 6: Final answer
    x = 137,103.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.