Home / 90,637.36-125,113.24-77,839.15

Finding the Fourth Proportional to 90,637.36, 125,113.24 and 77,839.15

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Solution

The fourth proportional to 90,637.36, 125,113.24 and 77,839.15 is: 107,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,637.36 : 125,113.24 = 77,839.15 : x
  2. Step 2: Convert to fraction form
    90,637.36/125,113.24 = 77,839.15/x
  3. Step 3: Cross multiply
    90,637.36x = 125,113.24 × 77,839.15
  4. Step 4: Simplify right side
    90,637.36x = 9,738,707,240.58
  5. Step 5: Solve for x
    x = 9,738,707,240.58/90,637.36
  6. Step 6: Final answer
    x = 107,446.95

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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.