Home / 129,913.39-179,239.66-76,200.67

Finding the Fourth Proportional to 129,913.39, 179,239.66 and 76,200.67

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Solution

The fourth proportional to 129,913.39, 179,239.66 and 76,200.67 is: 105,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,913.39 : 179,239.66 = 76,200.67 : x
  2. Step 2: Convert to fraction form
    129,913.39/179,239.66 = 76,200.67/x
  3. Step 3: Cross multiply
    129,913.39x = 179,239.66 × 76,200.67
  4. Step 4: Simplify right side
    129,913.39x = 13,658,182,182.57
  5. Step 5: Solve for x
    x = 13,658,182,182.57/129,913.39
  6. Step 6: Final answer
    x = 105,132.98

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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.