Home / 121,408.90-182,502.15-86,589.70

Finding the Fourth Proportional to 121,408.90, 182,502.15 and 86,589.70

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Solution

The fourth proportional to 121,408.90, 182,502.15 and 86,589.70 is: 130,161.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,408.90 : 182,502.15 = 86,589.70 : x
  2. Step 2: Convert to fraction form
    121,408.90/182,502.15 = 86,589.70/x
  3. Step 3: Cross multiply
    121,408.90x = 182,502.15 × 86,589.70
  4. Step 4: Simplify right side
    121,408.90x = 15,802,806,417.86
  5. Step 5: Solve for x
    x = 15,802,806,417.86/121,408.90
  6. Step 6: Final answer
    x = 130,161.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.