Home / 100,012.55-137,952.29-64,145.75

Finding the Fourth Proportional to 100,012.55, 137,952.29 and 64,145.75

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Solution

The fourth proportional to 100,012.55, 137,952.29 and 64,145.75 is: 88,479.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,012.55 : 137,952.29 = 64,145.75 : x
  2. Step 2: Convert to fraction form
    100,012.55/137,952.29 = 64,145.75/x
  3. Step 3: Cross multiply
    100,012.55x = 137,952.29 × 64,145.75
  4. Step 4: Simplify right side
    100,012.55x = 8,849,052,785.54
  5. Step 5: Solve for x
    x = 8,849,052,785.54/100,012.55
  6. Step 6: Final answer
    x = 88,479.42

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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.