Home / 90,818.40-136,227.60-65,740.80

Finding the Fourth Proportional to 90,818.40, 136,227.60 and 65,740.80

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Solution

The fourth proportional to 90,818.40, 136,227.60 and 65,740.80 is: 98,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,818.40 : 136,227.60 = 65,740.80 : x
  2. Step 2: Convert to fraction form
    90,818.40/136,227.60 = 65,740.80/x
  3. Step 3: Cross multiply
    90,818.40x = 136,227.60 × 65,740.80
  4. Step 4: Simplify right side
    90,818.40x = 8,955,711,406.08
  5. Step 5: Solve for x
    x = 8,955,711,406.08/90,818.40
  6. Step 6: Final answer
    x = 98,611.20

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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.