Home / 138,902.28-208,368.06-45,407.88

Finding the Fourth Proportional to 138,902.28, 208,368.06 and 45,407.88

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Solution

The fourth proportional to 138,902.28, 208,368.06 and 45,407.88 is: 68,116.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,902.28 : 208,368.06 = 45,407.88 : x
  2. Step 2: Convert to fraction form
    138,902.28/208,368.06 = 45,407.88/x
  3. Step 3: Cross multiply
    138,902.28x = 208,368.06 × 45,407.88
  4. Step 4: Simplify right side
    138,902.28x = 9,461,551,864.31
  5. Step 5: Solve for x
    x = 9,461,551,864.31/138,902.28
  6. Step 6: Final answer
    x = 68,116.61

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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.