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Finding the Fourth Proportional to 225,108.72, 310,631.76 and 124,506.72

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Solution

The fourth proportional to 225,108.72, 310,631.76 and 124,506.72 is: 171,809.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,108.72 : 310,631.76 = 124,506.72 : x
  2. Step 2: Convert to fraction form
    225,108.72/310,631.76 = 124,506.72/x
  3. Step 3: Cross multiply
    225,108.72x = 310,631.76 × 124,506.72
  4. Step 4: Simplify right side
    225,108.72x = 38,675,741,565.43
  5. Step 5: Solve for x
    x = 38,675,741,565.43/225,108.72
  6. Step 6: Final answer
    x = 171,809.17

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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.