Home / 138,667.12-207,984.61-38,835.30

Finding the Fourth Proportional to 138,667.12, 207,984.61 and 38,835.30

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Solution

The fourth proportional to 138,667.12, 207,984.61 and 38,835.30 is: 58,248.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,667.12 : 207,984.61 = 38,835.30 : x
  2. Step 2: Convert to fraction form
    138,667.12/207,984.61 = 38,835.30/x
  3. Step 3: Cross multiply
    138,667.12x = 207,984.61 × 38,835.30
  4. Step 4: Simplify right side
    138,667.12x = 8,077,144,724.73
  5. Step 5: Solve for x
    x = 8,077,144,724.73/138,667.12
  6. Step 6: Final answer
    x = 58,248.45

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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.