Home / 129,886.57-179,273.35-76,188.89

Finding the Fourth Proportional to 129,886.57, 179,273.35 and 76,188.89

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Solution

The fourth proportional to 129,886.57, 179,273.35 and 76,188.89 is: 105,158.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,886.57 : 179,273.35 = 76,188.89 : x
  2. Step 2: Convert to fraction form
    129,886.57/179,273.35 = 76,188.89/x
  3. Step 3: Cross multiply
    129,886.57x = 179,273.35 × 76,188.89
  4. Step 4: Simplify right side
    129,886.57x = 13,658,637,078.09
  5. Step 5: Solve for x
    x = 13,658,637,078.09/129,886.57
  6. Step 6: Final answer
    x = 105,158.19

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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.