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Finding the Fourth Proportional to 118,148.76, 163,065.78 and 112,834.44

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Solution

The fourth proportional to 118,148.76, 163,065.78 and 112,834.44 is: 155,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,148.76 : 163,065.78 = 112,834.44 : x
  2. Step 2: Convert to fraction form
    118,148.76/163,065.78 = 112,834.44/x
  3. Step 3: Cross multiply
    118,148.76x = 163,065.78 × 112,834.44
  4. Step 4: Simplify right side
    118,148.76x = 18,399,435,969.46
  5. Step 5: Solve for x
    x = 18,399,435,969.46/118,148.76
  6. Step 6: Final answer
    x = 155,731.10

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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.