Home / 138,897.28-208,360.56-45,402.88

Finding the Fourth Proportional to 138,897.28, 208,360.56 and 45,402.88

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Solution

The fourth proportional to 138,897.28, 208,360.56 and 45,402.88 is: 68,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,897.28 : 208,360.56 = 45,402.88 : x
  2. Step 2: Convert to fraction form
    138,897.28/208,360.56 = 45,402.88/x
  3. Step 3: Cross multiply
    138,897.28x = 208,360.56 × 45,402.88
  4. Step 4: Simplify right side
    138,897.28x = 9,460,169,502.41
  5. Step 5: Solve for x
    x = 9,460,169,502.41/138,897.28
  6. Step 6: Final answer
    x = 68,109.11

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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.