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Finding the Fourth Proportional to 118,810.74, 178,494.80 and 112,085.58

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Solution

The fourth proportional to 118,810.74, 178,494.80 and 112,085.58 is: 168,391.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,810.74 : 178,494.80 = 112,085.58 : x
  2. Step 2: Convert to fraction form
    118,810.74/178,494.80 = 112,085.58/x
  3. Step 3: Cross multiply
    118,810.74x = 178,494.80 × 112,085.58
  4. Step 4: Simplify right side
    118,810.74x = 20,006,692,624.56
  5. Step 5: Solve for x
    x = 20,006,692,624.56/118,810.74
  6. Step 6: Final answer
    x = 168,391.28

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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.