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Finding the Fourth Proportional to 142,800.80, 214,201.20 and 136,042.40

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Solution

The fourth proportional to 142,800.80, 214,201.20 and 136,042.40 is: 204,063.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,800.80 : 214,201.20 = 136,042.40 : x
  2. Step 2: Convert to fraction form
    142,800.80/214,201.20 = 136,042.40/x
  3. Step 3: Cross multiply
    142,800.80x = 214,201.20 × 136,042.40
  4. Step 4: Simplify right side
    142,800.80x = 29,140,445,330.88
  5. Step 5: Solve for x
    x = 29,140,445,330.88/142,800.80
  6. Step 6: Final answer
    x = 204,063.60

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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.