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Finding the Fourth Proportional to 92,210.60, 138,315.90 and 84,337.40

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Solution

The fourth proportional to 92,210.60, 138,315.90 and 84,337.40 is: 126,506.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,210.60 : 138,315.90 = 84,337.40 : x
  2. Step 2: Convert to fraction form
    92,210.60/138,315.90 = 84,337.40/x
  3. Step 3: Cross multiply
    92,210.60x = 138,315.90 × 84,337.40
  4. Step 4: Simplify right side
    92,210.60x = 11,665,203,384.66
  5. Step 5: Solve for x
    x = 11,665,203,384.66/92,210.60
  6. Step 6: Final answer
    x = 126,506.10

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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.