Home / 91,151.24-125,738.16-53,418.20

Finding the Fourth Proportional to 91,151.24, 125,738.16 and 53,418.20

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Solution

The fourth proportional to 91,151.24, 125,738.16 and 53,418.20 is: 73,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,151.24 : 125,738.16 = 53,418.20 : x
  2. Step 2: Convert to fraction form
    91,151.24/125,738.16 = 53,418.20/x
  3. Step 3: Cross multiply
    91,151.24x = 125,738.16 × 53,418.20
  4. Step 4: Simplify right side
    91,151.24x = 6,716,705,997.71
  5. Step 5: Solve for x
    x = 6,716,705,997.71/91,151.24
  6. Step 6: Final answer
    x = 73,687.49

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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.