Home / 138,733.30-208,126.20-43,987.35

Finding the Fourth Proportional to 138,733.30, 208,126.20 and 43,987.35

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Solution

The fourth proportional to 138,733.30, 208,126.20 and 43,987.35 is: 65,989.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733.30 : 208,126.20 = 43,987.35 : x
  2. Step 2: Convert to fraction form
    138,733.30/208,126.20 = 43,987.35/x
  3. Step 3: Cross multiply
    138,733.30x = 208,126.20 × 43,987.35
  4. Step 4: Simplify right side
    138,733.30x = 9,154,920,003.57
  5. Step 5: Solve for x
    x = 9,154,920,003.57/138,733.30
  6. Step 6: Final answer
    x = 65,989.35

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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.