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Finding the Fourth Proportional to 158,633.78, 237,483.18 and 138,950.78

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Solution

The fourth proportional to 158,633.78, 237,483.18 and 138,950.78 is: 208,016.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,633.78 : 237,483.18 = 138,950.78 : x
  2. Step 2: Convert to fraction form
    158,633.78/237,483.18 = 138,950.78/x
  3. Step 3: Cross multiply
    158,633.78x = 237,483.18 × 138,950.78
  4. Step 4: Simplify right side
    158,633.78x = 32,998,471,910.46
  5. Step 5: Solve for x
    x = 32,998,471,910.46/158,633.78
  6. Step 6: Final answer
    x = 208,016.68

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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.