Home / 115,152.87-158,945.18-72,739.65

Finding the Fourth Proportional to 115,152.87, 158,945.18 and 72,739.65

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Solution

The fourth proportional to 115,152.87, 158,945.18 and 72,739.65 is: 100,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,152.87 : 158,945.18 = 72,739.65 : x
  2. Step 2: Convert to fraction form
    115,152.87/158,945.18 = 72,739.65/x
  3. Step 3: Cross multiply
    115,152.87x = 158,945.18 × 72,739.65
  4. Step 4: Simplify right side
    115,152.87x = 11,561,616,398.69
  5. Step 5: Solve for x
    x = 11,561,616,398.69/115,152.87
  6. Step 6: Final answer
    x = 100,402.33

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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.