Home / 218,631.64-301,712.72-123,140.04

Finding the Fourth Proportional to 218,631.64, 301,712.72 and 123,140.04

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Solution

The fourth proportional to 218,631.64, 301,712.72 and 123,140.04 is: 169,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,631.64 : 301,712.72 = 123,140.04 : x
  2. Step 2: Convert to fraction form
    218,631.64/301,712.72 = 123,140.04/x
  3. Step 3: Cross multiply
    218,631.64x = 301,712.72 × 123,140.04
  4. Step 4: Simplify right side
    218,631.64x = 37,152,916,409.31
  5. Step 5: Solve for x
    x = 37,152,916,409.31/218,631.64
  6. Step 6: Final answer
    x = 169,933.85

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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.