Home / 138,127.90-207,171.35-38,277.68

Finding the Fourth Proportional to 138,127.90, 207,171.35 and 38,277.68

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Solution

The fourth proportional to 138,127.90, 207,171.35 and 38,277.68 is: 57,410.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,127.90 : 207,171.35 = 38,277.68 : x
  2. Step 2: Convert to fraction form
    138,127.90/207,171.35 = 38,277.68/x
  3. Step 3: Cross multiply
    138,127.90x = 207,171.35 × 38,277.68
  4. Step 4: Simplify right side
    138,127.90x = 7,930,038,449.08
  5. Step 5: Solve for x
    x = 7,930,038,449.08/138,127.90
  6. Step 6: Final answer
    x = 57,410.84

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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.