Home / 90,800.14-136,200.21-28,475.50

Finding the Fourth Proportional to 90,800.14, 136,200.21 and 28,475.50

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Solution

The fourth proportional to 90,800.14, 136,200.21 and 28,475.50 is: 42,713.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,800.14 : 136,200.21 = 28,475.50 : x
  2. Step 2: Convert to fraction form
    90,800.14/136,200.21 = 28,475.50/x
  3. Step 3: Cross multiply
    90,800.14x = 136,200.21 × 28,475.50
  4. Step 4: Simplify right side
    90,800.14x = 3,878,369,079.86
  5. Step 5: Solve for x
    x = 3,878,369,079.86/90,800.14
  6. Step 6: Final answer
    x = 42,713.25

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Similar ratio
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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.