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Finding the Fourth Proportional to 92,443.20, 138,664.80 and 88,814.40

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Solution

The fourth proportional to 92,443.20, 138,664.80 and 88,814.40 is: 133,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,443.20 : 138,664.80 = 88,814.40 : x
  2. Step 2: Convert to fraction form
    92,443.20/138,664.80 = 88,814.40/x
  3. Step 3: Cross multiply
    92,443.20x = 138,664.80 × 88,814.40
  4. Step 4: Simplify right side
    92,443.20x = 12,315,431,013.12
  5. Step 5: Solve for x
    x = 12,315,431,013.12/92,443.20
  6. Step 6: Final answer
    x = 133,221.60

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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.