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Finding the Fourth Proportional to 225,149.76, 310,709.12 and 123,173.04

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Solution

The fourth proportional to 225,149.76, 310,709.12 and 123,173.04 is: 169,980.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,149.76 : 310,709.12 = 123,173.04 : x
  2. Step 2: Convert to fraction form
    225,149.76/310,709.12 = 123,173.04/x
  3. Step 3: Cross multiply
    225,149.76x = 310,709.12 × 123,173.04
  4. Step 4: Simplify right side
    225,149.76x = 38,270,986,866.12
  5. Step 5: Solve for x
    x = 38,270,986,866.12/225,149.76
  6. Step 6: Final answer
    x = 169,980.14

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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.