Home / 138,874.16-208,322.03-45,389.36

Finding the Fourth Proportional to 138,874.16, 208,322.03 and 45,389.36

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Solution

The fourth proportional to 138,874.16, 208,322.03 and 45,389.36 is: 68,087.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,874.16 : 208,322.03 = 45,389.36 : x
  2. Step 2: Convert to fraction form
    138,874.16/208,322.03 = 45,389.36/x
  3. Step 3: Cross multiply
    138,874.16x = 208,322.03 × 45,389.36
  4. Step 4: Simplify right side
    138,874.16x = 9,455,602,687.46
  5. Step 5: Solve for x
    x = 9,455,602,687.46/138,874.16
  6. Step 6: Final answer
    x = 68,087.56

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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.