Home / 129,955.20-179,341.16-76,278.93

Finding the Fourth Proportional to 129,955.20, 179,341.16 and 76,278.93

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Solution

The fourth proportional to 129,955.20, 179,341.16 and 76,278.93 is: 105,266.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,955.20 : 179,341.16 = 76,278.93 : x
  2. Step 2: Convert to fraction form
    129,955.20/179,341.16 = 76,278.93/x
  3. Step 3: Cross multiply
    129,955.20x = 179,341.16 × 76,278.93
  4. Step 4: Simplify right side
    129,955.20x = 13,679,951,408.36
  5. Step 5: Solve for x
    x = 13,679,951,408.36/129,955.20
  6. Step 6: Final answer
    x = 105,266.67

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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.