Home / 129,736.53-179,041.73-81,972.45

Finding the Fourth Proportional to 129,736.53, 179,041.73 and 81,972.45

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Solution

The fourth proportional to 129,736.53, 179,041.73 and 81,972.45 is: 113,125.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,736.53 : 179,041.73 = 81,972.45 : x
  2. Step 2: Convert to fraction form
    129,736.53/179,041.73 = 81,972.45/x
  3. Step 3: Cross multiply
    129,736.53x = 179,041.73 × 81,972.45
  4. Step 4: Simplify right side
    129,736.53x = 14,676,488,850.48
  5. Step 5: Solve for x
    x = 14,676,488,850.48/129,736.53
  6. Step 6: Final answer
    x = 113,125.34

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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.