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Finding the Fourth Proportional to 141,819.10, 212,728.65 and 70,960.30

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Solution

The fourth proportional to 141,819.10, 212,728.65 and 70,960.30 is: 106,440.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,819.10 : 212,728.65 = 70,960.30 : x
  2. Step 2: Convert to fraction form
    141,819.10/212,728.65 = 70,960.30/x
  3. Step 3: Cross multiply
    141,819.10x = 212,728.65 × 70,960.30
  4. Step 4: Simplify right side
    141,819.10x = 15,095,288,822.60
  5. Step 5: Solve for x
    x = 15,095,288,822.60/141,819.10
  6. Step 6: Final answer
    x = 106,440.45

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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.