Home / 115,151.37-158,943.11-72,738.15

Finding the Fourth Proportional to 115,151.37, 158,943.11 and 72,738.15

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Solution

The fourth proportional to 115,151.37, 158,943.11 and 72,738.15 is: 100,400.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,151.37 : 158,943.11 = 72,738.15 : x
  2. Step 2: Convert to fraction form
    115,151.37/158,943.11 = 72,738.15/x
  3. Step 3: Cross multiply
    115,151.37x = 158,943.11 × 72,738.15
  4. Step 4: Simplify right side
    115,151.37x = 11,561,227,412.96
  5. Step 5: Solve for x
    x = 11,561,227,412.96/115,151.37
  6. Step 6: Final answer
    x = 100,400.26

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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.