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Finding the Fourth Proportional to 131,679, 197,520.84 and 42,932.16

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Solution

The fourth proportional to 131,679, 197,520.84 and 42,932.16 is: 64,399.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,679 : 197,520.84 = 42,932.16 : x
  2. Step 2: Convert to fraction form
    131,679/197,520.84 = 42,932.16/x
  3. Step 3: Cross multiply
    131,679x = 197,520.84 × 42,932.16
  4. Step 4: Simplify right side
    131,679x = 8,479,996,306.21
  5. Step 5: Solve for x
    x = 8,479,996,306.21/131,679
  6. Step 6: Final answer
    x = 64,399.00

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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.