Home / 129,953.19-179,336.25-76,239.39

Finding the Fourth Proportional to 129,953.19, 179,336.25 and 76,239.39

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Solution

The fourth proportional to 129,953.19, 179,336.25 and 76,239.39 is: 105,210.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,953.19 : 179,336.25 = 76,239.39 : x
  2. Step 2: Convert to fraction form
    129,953.19/179,336.25 = 76,239.39/x
  3. Step 3: Cross multiply
    129,953.19x = 179,336.25 × 76,239.39
  4. Step 4: Simplify right side
    129,953.19x = 13,672,486,304.89
  5. Step 5: Solve for x
    x = 13,672,486,304.89/129,953.19
  6. Step 6: Final answer
    x = 105,210.86

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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.