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Finding the Fourth Proportional to 112,368.70, 155,251.11 and 111,262.78

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Solution

The fourth proportional to 112,368.70, 155,251.11 and 111,262.78 is: 153,723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,368.70 : 155,251.11 = 111,262.78 : x
  2. Step 2: Convert to fraction form
    112,368.70/155,251.11 = 111,262.78/x
  3. Step 3: Cross multiply
    112,368.70x = 155,251.11 × 111,262.78
  4. Step 4: Simplify right side
    112,368.70x = 17,273,670,096.69
  5. Step 5: Solve for x
    x = 17,273,670,096.69/112,368.70
  6. Step 6: Final answer
    x = 153,723.15

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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.