Home / 129,803.85-179,114.03-75,343.45

Finding the Fourth Proportional to 129,803.85, 179,114.03 and 75,343.45

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Solution

The fourth proportional to 129,803.85, 179,114.03 and 75,343.45 is: 103,965.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,803.85 : 179,114.03 = 75,343.45 : x
  2. Step 2: Convert to fraction form
    129,803.85/179,114.03 = 75,343.45/x
  3. Step 3: Cross multiply
    129,803.85x = 179,114.03 × 75,343.45
  4. Step 4: Simplify right side
    129,803.85x = 13,495,068,586.89
  5. Step 5: Solve for x
    x = 13,495,068,586.89/129,803.85
  6. Step 6: Final answer
    x = 103,965.09

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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.