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Finding the Fourth Proportional to 92,113.20, 138,250.80 and 54,626.40

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Solution

The fourth proportional to 92,113.20, 138,250.80 and 54,626.40 is: 81,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,113.20 : 138,250.80 = 54,626.40 : x
  2. Step 2: Convert to fraction form
    92,113.20/138,250.80 = 54,626.40/x
  3. Step 3: Cross multiply
    92,113.20x = 138,250.80 × 54,626.40
  4. Step 4: Simplify right side
    92,113.20x = 7,552,143,501.12
  5. Step 5: Solve for x
    x = 7,552,143,501.12/92,113.20
  6. Step 6: Final answer
    x = 81,987.64

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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.