Home / 92,426.20-138,639.30-76,874.20

Finding the Fourth Proportional to 92,426.20, 138,639.30 and 76,874.20

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Solution

The fourth proportional to 92,426.20, 138,639.30 and 76,874.20 is: 115,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,426.20 : 138,639.30 = 76,874.20 : x
  2. Step 2: Convert to fraction form
    92,426.20/138,639.30 = 76,874.20/x
  3. Step 3: Cross multiply
    92,426.20x = 138,639.30 × 76,874.20
  4. Step 4: Simplify right side
    92,426.20x = 10,657,785,276.06
  5. Step 5: Solve for x
    x = 10,657,785,276.06/92,426.20
  6. Step 6: Final answer
    x = 115,311.30

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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.