Home / 157,409.12-217,304.88-106,689.92

Finding the Fourth Proportional to 157,409.12, 217,304.88 and 106,689.92

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Solution

The fourth proportional to 157,409.12, 217,304.88 and 106,689.92 is: 147,286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,409.12 : 217,304.88 = 106,689.92 : x
  2. Step 2: Convert to fraction form
    157,409.12/217,304.88 = 106,689.92/x
  3. Step 3: Cross multiply
    157,409.12x = 217,304.88 × 106,689.92
  4. Step 4: Simplify right side
    157,409.12x = 23,184,240,262.81
  5. Step 5: Solve for x
    x = 23,184,240,262.81/157,409.12
  6. Step 6: Final answer
    x = 147,286.51

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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.