Home / 109,542.71-151,175.94-61,778.63

Finding the Fourth Proportional to 109,542.71, 151,175.94 and 61,778.63

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Solution

The fourth proportional to 109,542.71, 151,175.94 and 61,778.63 is: 85,258.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,542.71 : 151,175.94 = 61,778.63 : x
  2. Step 2: Convert to fraction form
    109,542.71/151,175.94 = 61,778.63/x
  3. Step 3: Cross multiply
    109,542.71x = 151,175.94 × 61,778.63
  4. Step 4: Simplify right side
    109,542.71x = 9,339,442,462.16
  5. Step 5: Solve for x
    x = 9,339,442,462.16/109,542.71
  6. Step 6: Final answer
    x = 85,258.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.