Home / 90,245.25-124,260.28-80,156.16

Finding the Fourth Proportional to 90,245.25, 124,260.28 and 80,156.16

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Solution

The fourth proportional to 90,245.25, 124,260.28 and 80,156.16 is: 110,368.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,245.25 : 124,260.28 = 80,156.16 : x
  2. Step 2: Convert to fraction form
    90,245.25/124,260.28 = 80,156.16/x
  3. Step 3: Cross multiply
    90,245.25x = 124,260.28 × 80,156.16
  4. Step 4: Simplify right side
    90,245.25x = 9,960,226,684.93
  5. Step 5: Solve for x
    x = 9,960,226,684.93/90,245.25
  6. Step 6: Final answer
    x = 110,368.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.