Home / 138,823.60-208,209.13-67,674.82

Finding the Fourth Proportional to 138,823.60, 208,209.13 and 67,674.82

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Solution

The fourth proportional to 138,823.60, 208,209.13 and 67,674.82 is: 101,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,823.60 : 208,209.13 = 67,674.82 : x
  2. Step 2: Convert to fraction form
    138,823.60/208,209.13 = 67,674.82/x
  3. Step 3: Cross multiply
    138,823.60x = 208,209.13 × 67,674.82
  4. Step 4: Simplify right side
    138,823.60x = 14,090,515,395.11
  5. Step 5: Solve for x
    x = 14,090,515,395.11/138,823.60
  6. Step 6: Final answer
    x = 101,499.42

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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.