Home / 109,123.00-163,399.28-102,471.68

Finding the Fourth Proportional to 109,123.00, 163,399.28 and 102,471.68

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Solution

The fourth proportional to 109,123.00, 163,399.28 and 102,471.68 is: 153,439.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,123.00 : 163,399.28 = 102,471.68 : x
  2. Step 2: Convert to fraction form
    109,123.00/163,399.28 = 102,471.68/x
  3. Step 3: Cross multiply
    109,123.00x = 163,399.28 × 102,471.68
  4. Step 4: Simplify right side
    109,123.00x = 16,743,798,628.53
  5. Step 5: Solve for x
    x = 16,743,798,628.53/109,123.00
  6. Step 6: Final answer
    x = 153,439.69

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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.