Home / 138,742.16-208,146.36-45,248

Finding the Fourth Proportional to 138,742.16, 208,146.36 and 45,248

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Solution

The fourth proportional to 138,742.16, 208,146.36 and 45,248 is: 67,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,742.16 : 208,146.36 = 45,248 : x
  2. Step 2: Convert to fraction form
    138,742.16/208,146.36 = 45,248/x
  3. Step 3: Cross multiply
    138,742.16x = 208,146.36 × 45,248
  4. Step 4: Simplify right side
    138,742.16x = 9,418,206,497.28
  5. Step 5: Solve for x
    x = 9,418,206,497.28/138,742.16
  6. Step 6: Final answer
    x = 67,882.80

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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.