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Finding the Fourth Proportional to 92,110.70, 138,166.05 and 81,224.30

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Solution

The fourth proportional to 92,110.70, 138,166.05 and 81,224.30 is: 121,836.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,110.70 : 138,166.05 = 81,224.30 : x
  2. Step 2: Convert to fraction form
    92,110.70/138,166.05 = 81,224.30/x
  3. Step 3: Cross multiply
    92,110.70x = 138,166.05 × 81,224.30
  4. Step 4: Simplify right side
    92,110.70x = 11,222,440,695.02
  5. Step 5: Solve for x
    x = 11,222,440,695.02/92,110.70
  6. Step 6: Final answer
    x = 121,836.45

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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.