Home / 92,062.32-137,421.39-78,998.64

Finding the Fourth Proportional to 92,062.32, 137,421.39 and 78,998.64

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Solution

The fourth proportional to 92,062.32, 137,421.39 and 78,998.64 is: 117,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,062.32 : 137,421.39 = 78,998.64 : x
  2. Step 2: Convert to fraction form
    92,062.32/137,421.39 = 78,998.64/x
  3. Step 3: Cross multiply
    92,062.32x = 137,421.39 × 78,998.64
  4. Step 4: Simplify right side
    92,062.32x = 10,856,102,916.91
  5. Step 5: Solve for x
    x = 10,856,102,916.91/92,062.32
  6. Step 6: Final answer
    x = 117,921.24

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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.