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Finding the Fourth Proportional to 129,951.65, 179,334.78 and 76,237.58

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Solution

The fourth proportional to 129,951.65, 179,334.78 and 76,237.58 is: 105,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,951.65 : 179,334.78 = 76,237.58 : x
  2. Step 2: Convert to fraction form
    129,951.65/179,334.78 = 76,237.58/x
  3. Step 3: Cross multiply
    129,951.65x = 179,334.78 × 76,237.58
  4. Step 4: Simplify right side
    129,951.65x = 13,672,050,085.37
  5. Step 5: Solve for x
    x = 13,672,050,085.37/129,951.65
  6. Step 6: Final answer
    x = 105,208.74

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1.5x scale

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.