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Finding the Fourth Proportional to 113,150.66, 169,725.98 and 28,911

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Solution

The fourth proportional to 113,150.66, 169,725.98 and 28,911 is: 43,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,150.66 : 169,725.98 = 28,911 : x
  2. Step 2: Convert to fraction form
    113,150.66/169,725.98 = 28,911/x
  3. Step 3: Cross multiply
    113,150.66x = 169,725.98 × 28,911
  4. Step 4: Simplify right side
    113,150.66x = 4,906,947,807.78
  5. Step 5: Solve for x
    x = 4,906,947,807.78/113,150.66
  6. Step 6: Final answer
    x = 43,366.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.