Home / 121,425.40-182,138.10-108,740.80

Finding the Fourth Proportional to 121,425.40, 182,138.10 and 108,740.80

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Solution

The fourth proportional to 121,425.40, 182,138.10 and 108,740.80 is: 163,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,425.40 : 182,138.10 = 108,740.80 : x
  2. Step 2: Convert to fraction form
    121,425.40/182,138.10 = 108,740.80/x
  3. Step 3: Cross multiply
    121,425.40x = 182,138.10 × 108,740.80
  4. Step 4: Simplify right side
    121,425.40x = 19,805,842,704.48
  5. Step 5: Solve for x
    x = 19,805,842,704.48/121,425.40
  6. Step 6: Final answer
    x = 163,111.20

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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.