Home / 129,858.20-179,153.40-75,401.06

Finding the Fourth Proportional to 129,858.20, 179,153.40 and 75,401.06

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Solution

The fourth proportional to 129,858.20, 179,153.40 and 75,401.06 is: 104,023.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,858.20 : 179,153.40 = 75,401.06 : x
  2. Step 2: Convert to fraction form
    129,858.20/179,153.40 = 75,401.06/x
  3. Step 3: Cross multiply
    129,858.20x = 179,153.40 × 75,401.06
  4. Step 4: Simplify right side
    129,858.20x = 13,508,356,710.49
  5. Step 5: Solve for x
    x = 13,508,356,710.49/129,858.20
  6. Step 6: Final answer
    x = 104,023.91

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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.