Home / 138,948.17-208,701.23-82,897.63

Finding the Fourth Proportional to 138,948.17, 208,701.23 and 82,897.63

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Solution

The fourth proportional to 138,948.17, 208,701.23 and 82,897.63 is: 124,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,948.17 : 208,701.23 = 82,897.63 : x
  2. Step 2: Convert to fraction form
    138,948.17/208,701.23 = 82,897.63/x
  3. Step 3: Cross multiply
    138,948.17x = 208,701.23 × 82,897.63
  4. Step 4: Simplify right side
    138,948.17x = 17,300,836,408.84
  5. Step 5: Solve for x
    x = 17,300,836,408.84/138,948.17
  6. Step 6: Final answer
    x = 124,512.88

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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.