Home / 92,062.13-137,421.11-78,998.45

Finding the Fourth Proportional to 92,062.13, 137,421.11 and 78,998.45

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Solution

The fourth proportional to 92,062.13, 137,421.11 and 78,998.45 is: 117,920.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,062.13 : 137,421.11 = 78,998.45 : x
  2. Step 2: Convert to fraction form
    92,062.13/137,421.11 = 78,998.45/x
  3. Step 3: Cross multiply
    92,062.13x = 137,421.11 × 78,998.45
  4. Step 4: Simplify right side
    92,062.13x = 10,856,055,080.21
  5. Step 5: Solve for x
    x = 10,856,055,080.21/92,062.13
  6. Step 6: Final answer
    x = 117,920.96

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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.