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Finding the Fourth Proportional to 92,620.88, 138,117.82 and 91,778.84

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Solution

The fourth proportional to 92,620.88, 138,117.82 and 91,778.84 is: 136,862.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,620.88 : 138,117.82 = 91,778.84 : x
  2. Step 2: Convert to fraction form
    92,620.88/138,117.82 = 91,778.84/x
  3. Step 3: Cross multiply
    92,620.88x = 138,117.82 × 91,778.84
  4. Step 4: Simplify right side
    92,620.88x = 12,676,293,302.93
  5. Step 5: Solve for x
    x = 12,676,293,302.93/92,620.88
  6. Step 6: Final answer
    x = 136,862.16

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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.