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Finding the Fourth Proportional to 142,677.64, 196,892.13 and 79,011.64

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Solution

The fourth proportional to 142,677.64, 196,892.13 and 79,011.64 is: 109,034.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,677.64 : 196,892.13 = 79,011.64 : x
  2. Step 2: Convert to fraction form
    142,677.64/196,892.13 = 79,011.64/x
  3. Step 3: Cross multiply
    142,677.64x = 196,892.13 × 79,011.64
  4. Step 4: Simplify right side
    142,677.64x = 15,556,770,094.39
  5. Step 5: Solve for x
    x = 15,556,770,094.39/142,677.64
  6. Step 6: Final answer
    x = 109,034.39

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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.