Home / 129,742.56-179,003.52-76,010.40

Finding the Fourth Proportional to 129,742.56, 179,003.52 and 76,010.40

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Solution

The fourth proportional to 129,742.56, 179,003.52 and 76,010.40 is: 104,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,742.56 : 179,003.52 = 76,010.40 : x
  2. Step 2: Convert to fraction form
    129,742.56/179,003.52 = 76,010.40/x
  3. Step 3: Cross multiply
    129,742.56x = 179,003.52 × 76,010.40
  4. Step 4: Simplify right side
    129,742.56x = 13,606,129,156.61
  5. Step 5: Solve for x
    x = 13,606,129,156.61/129,742.56
  6. Step 6: Final answer
    x = 104,870.21

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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.