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Finding the Fourth Proportional to 142,850.70, 197,132.67 and 79,184.70

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Solution

The fourth proportional to 142,850.70, 197,132.67 and 79,184.70 is: 109,274.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,850.70 : 197,132.67 = 79,184.70 : x
  2. Step 2: Convert to fraction form
    142,850.70/197,132.67 = 79,184.70/x
  3. Step 3: Cross multiply
    142,850.70x = 197,132.67 × 79,184.70
  4. Step 4: Simplify right side
    142,850.70x = 15,609,891,334.15
  5. Step 5: Solve for x
    x = 15,609,891,334.15/142,850.70
  6. Step 6: Final answer
    x = 109,274.17

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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.