Home / 138,922.74-208,434.06-54,636.17

Finding the Fourth Proportional to 138,922.74, 208,434.06 and 54,636.17

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Solution

The fourth proportional to 138,922.74, 208,434.06 and 54,636.17 is: 81,973.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,922.74 : 208,434.06 = 54,636.17 : x
  2. Step 2: Convert to fraction form
    138,922.74/208,434.06 = 54,636.17/x
  3. Step 3: Cross multiply
    138,922.74x = 208,434.06 × 54,636.17
  4. Step 4: Simplify right side
    138,922.74x = 11,388,037,693.78
  5. Step 5: Solve for x
    x = 11,388,037,693.78/138,922.74
  6. Step 6: Final answer
    x = 81,973.89

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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.