Home / 138,417.12-207,625.68-38,577.60

Finding the Fourth Proportional to 138,417.12, 207,625.68 and 38,577.60

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Solution

The fourth proportional to 138,417.12, 207,625.68 and 38,577.60 is: 57,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,417.12 : 207,625.68 = 38,577.60 : x
  2. Step 2: Convert to fraction form
    138,417.12/207,625.68 = 38,577.60/x
  3. Step 3: Cross multiply
    138,417.12x = 207,625.68 × 38,577.60
  4. Step 4: Simplify right side
    138,417.12x = 8,009,700,432.77
  5. Step 5: Solve for x
    x = 8,009,700,432.77/138,417.12
  6. Step 6: Final answer
    x = 57,866.40

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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.