Home / 129,637.75-179,049.06-86,542.21

Finding the Fourth Proportional to 129,637.75, 179,049.06 and 86,542.21

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Solution

The fourth proportional to 129,637.75, 179,049.06 and 86,542.21 is: 119,527.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,637.75 : 179,049.06 = 86,542.21 : x
  2. Step 2: Convert to fraction form
    129,637.75/179,049.06 = 86,542.21/x
  3. Step 3: Cross multiply
    129,637.75x = 179,049.06 × 86,542.21
  4. Step 4: Simplify right side
    129,637.75x = 15,495,301,350.82
  5. Step 5: Solve for x
    x = 15,495,301,350.82/129,637.75
  6. Step 6: Final answer
    x = 119,527.69

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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.