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Finding the Fourth Proportional to 92,003.40, 138,005.10 and 89,411.40

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Solution

The fourth proportional to 92,003.40, 138,005.10 and 89,411.40 is: 134,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,003.40 : 138,005.10 = 89,411.40 : x
  2. Step 2: Convert to fraction form
    92,003.40/138,005.10 = 89,411.40/x
  3. Step 3: Cross multiply
    92,003.40x = 138,005.10 × 89,411.40
  4. Step 4: Simplify right side
    92,003.40x = 12,339,229,198.14
  5. Step 5: Solve for x
    x = 12,339,229,198.14/92,003.40
  6. Step 6: Final answer
    x = 134,117.10

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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.