Home / 83,931.40-125,897.10-80,705.80

Finding the Fourth Proportional to 83,931.40, 125,897.10 and 80,705.80

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Solution

The fourth proportional to 83,931.40, 125,897.10 and 80,705.80 is: 121,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.40 : 125,897.10 = 80,705.80 : x
  2. Step 2: Convert to fraction form
    83,931.40/125,897.10 = 80,705.80/x
  3. Step 3: Cross multiply
    83,931.40x = 125,897.10 × 80,705.80
  4. Step 4: Simplify right side
    83,931.40x = 10,160,626,173.18
  5. Step 5: Solve for x
    x = 10,160,626,173.18/83,931.40
  6. Step 6: Final answer
    x = 121,058.70

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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.