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Finding the Fourth Proportional to 92,616.96, 138,254.88 and 81,407.04

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Solution

The fourth proportional to 92,616.96, 138,254.88 and 81,407.04 is: 121,521.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,616.96 : 138,254.88 = 81,407.04 : x
  2. Step 2: Convert to fraction form
    92,616.96/138,254.88 = 81,407.04/x
  3. Step 3: Cross multiply
    92,616.96x = 138,254.88 × 81,407.04
  4. Step 4: Simplify right side
    92,616.96x = 11,254,920,546.36
  5. Step 5: Solve for x
    x = 11,254,920,546.36/92,616.96
  6. Step 6: Final answer
    x = 121,521.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.