Home / 129,631.64-194,443.81-70,839.61

Finding the Fourth Proportional to 129,631.64, 194,443.81 and 70,839.61

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Solution

The fourth proportional to 129,631.64, 194,443.81 and 70,839.61 is: 106,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,631.64 : 194,443.81 = 70,839.61 : x
  2. Step 2: Convert to fraction form
    129,631.64/194,443.81 = 70,839.61/x
  3. Step 3: Cross multiply
    129,631.64x = 194,443.81 × 70,839.61
  4. Step 4: Simplify right side
    129,631.64x = 13,774,323,004.11
  5. Step 5: Solve for x
    x = 13,774,323,004.11/129,631.64
  6. Step 6: Final answer
    x = 106,257.42

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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.