Home / 138,822.60-191,898.02-123,863.52

Finding the Fourth Proportional to 138,822.60, 191,898.02 and 123,863.52

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Solution

The fourth proportional to 138,822.60, 191,898.02 and 123,863.52 is: 171,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,822.60 : 191,898.02 = 123,863.52 : x
  2. Step 2: Convert to fraction form
    138,822.60/191,898.02 = 123,863.52/x
  3. Step 3: Cross multiply
    138,822.60x = 191,898.02 × 123,863.52
  4. Step 4: Simplify right side
    138,822.60x = 23,769,164,238.23
  5. Step 5: Solve for x
    x = 23,769,164,238.23/138,822.60
  6. Step 6: Final answer
    x = 171,219.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.