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Finding the Fourth Proportional to 126,838.53, 175,036.80 and 70,249.90

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Solution

The fourth proportional to 126,838.53, 175,036.80 and 70,249.90 is: 96,944.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,838.53 : 175,036.80 = 70,249.90 : x
  2. Step 2: Convert to fraction form
    126,838.53/175,036.80 = 70,249.90/x
  3. Step 3: Cross multiply
    126,838.53x = 175,036.80 × 70,249.90
  4. Step 4: Simplify right side
    126,838.53x = 12,296,317,696.32
  5. Step 5: Solve for x
    x = 12,296,317,696.32/126,838.53
  6. Step 6: Final answer
    x = 96,944.66

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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.