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Finding the Fourth Proportional to 129,967, 179,355 and 70,351

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Solution

The fourth proportional to 129,967, 179,355 and 70,351 is: 97,084.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,967 : 179,355 = 70,351 : x
  2. Step 2: Convert to fraction form
    129,967/179,355 = 70,351/x
  3. Step 3: Cross multiply
    129,967x = 179,355 × 70,351
  4. Step 4: Simplify right side
    129,967x = 12,617,803,605
  5. Step 5: Solve for x
    x = 12,617,803,605/129,967
  6. Step 6: Final answer
    x = 97,084.67

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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.