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Finding the Fourth Proportional to 142,010.64, 212,986.80 and 67,098.96

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Solution

The fourth proportional to 142,010.64, 212,986.80 and 67,098.96 is: 100,634.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,010.64 : 212,986.80 = 67,098.96 : x
  2. Step 2: Convert to fraction form
    142,010.64/212,986.80 = 67,098.96/x
  3. Step 3: Cross multiply
    142,010.64x = 212,986.80 × 67,098.96
  4. Step 4: Simplify right side
    142,010.64x = 14,291,192,773.73
  5. Step 5: Solve for x
    x = 14,291,192,773.73/142,010.64
  6. Step 6: Final answer
    x = 100,634.66

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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.