Home / 115,039.16-158,752.49-66,647.66

Finding the Fourth Proportional to 115,039.16, 158,752.49 and 66,647.66

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Solution

The fourth proportional to 115,039.16, 158,752.49 and 66,647.66 is: 91,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,039.16 : 158,752.49 = 66,647.66 : x
  2. Step 2: Convert to fraction form
    115,039.16/158,752.49 = 66,647.66/x
  3. Step 3: Cross multiply
    115,039.16x = 158,752.49 × 66,647.66
  4. Step 4: Simplify right side
    115,039.16x = 10,580,480,850.67
  5. Step 5: Solve for x
    x = 10,580,480,850.67/115,039.16
  6. Step 6: Final answer
    x = 91,972.87

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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.