Home / 90,717.04-124,859.01-79,891.12

Finding the Fourth Proportional to 90,717.04, 124,859.01 and 79,891.12

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Solution

The fourth proportional to 90,717.04, 124,859.01 and 79,891.12 is: 109,958.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717.04 : 124,859.01 = 79,891.12 : x
  2. Step 2: Convert to fraction form
    90,717.04/124,859.01 = 79,891.12/x
  3. Step 3: Cross multiply
    90,717.04x = 124,859.01 × 79,891.12
  4. Step 4: Simplify right side
    90,717.04x = 9,975,126,150.99
  5. Step 5: Solve for x
    x = 9,975,126,150.99/90,717.04
  6. Step 6: Final answer
    x = 109,958.68

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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.