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Finding the Fourth Proportional to 142,191.80, 196,216.80 and 88,475.12

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Solution

The fourth proportional to 142,191.80, 196,216.80 and 88,475.12 is: 122,090.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,191.80 : 196,216.80 = 88,475.12 : x
  2. Step 2: Convert to fraction form
    142,191.80/196,216.80 = 88,475.12/x
  3. Step 3: Cross multiply
    142,191.80x = 196,216.80 × 88,475.12
  4. Step 4: Simplify right side
    142,191.80x = 17,360,304,926.02
  5. Step 5: Solve for x
    x = 17,360,304,926.02/142,191.80
  6. Step 6: Final answer
    x = 122,090.76

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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.