Home / 129,915.39-179,242.42-76,202.67

Finding the Fourth Proportional to 129,915.39, 179,242.42 and 76,202.67

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Solution

The fourth proportional to 129,915.39, 179,242.42 and 76,202.67 is: 105,135.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,915.39 : 179,242.42 = 76,202.67 : x
  2. Step 2: Convert to fraction form
    129,915.39/179,242.42 = 76,202.67/x
  3. Step 3: Cross multiply
    129,915.39x = 179,242.42 × 76,202.67
  4. Step 4: Simplify right side
    129,915.39x = 13,658,750,981.26
  5. Step 5: Solve for x
    x = 13,658,750,981.26/129,915.39
  6. Step 6: Final answer
    x = 105,135.74

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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.