Home / 138,632.26-191,303.61-79,012.42

Finding the Fourth Proportional to 138,632.26, 191,303.61 and 79,012.42

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Solution

The fourth proportional to 138,632.26, 191,303.61 and 79,012.42 is: 109,032.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,632.26 : 191,303.61 = 79,012.42 : x
  2. Step 2: Convert to fraction form
    138,632.26/191,303.61 = 79,012.42/x
  3. Step 3: Cross multiply
    138,632.26x = 191,303.61 × 79,012.42
  4. Step 4: Simplify right side
    138,632.26x = 15,115,361,180.84
  5. Step 5: Solve for x
    x = 15,115,361,180.84/138,632.26
  6. Step 6: Final answer
    x = 109,032.06

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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.