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Finding the Fourth Proportional to 92,129.88, 137,521.95 and 79,066.20

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Solution

The fourth proportional to 92,129.88, 137,521.95 and 79,066.20 is: 118,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,129.88 : 137,521.95 = 79,066.20 : x
  2. Step 2: Convert to fraction form
    92,129.88/137,521.95 = 79,066.20/x
  3. Step 3: Cross multiply
    92,129.88x = 137,521.95 × 79,066.20
  4. Step 4: Simplify right side
    92,129.88x = 10,873,338,003.09
  5. Step 5: Solve for x
    x = 10,873,338,003.09/92,129.88
  6. Step 6: Final answer
    x = 118,021.84

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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.