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Finding the Fourth Proportional to 118,657.05, 177,888.02 and 55,445.91

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Solution

The fourth proportional to 118,657.05, 177,888.02 and 55,445.91 is: 83,123.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,657.05 : 177,888.02 = 55,445.91 : x
  2. Step 2: Convert to fraction form
    118,657.05/177,888.02 = 55,445.91/x
  3. Step 3: Cross multiply
    118,657.05x = 177,888.02 × 55,445.91
  4. Step 4: Simplify right side
    118,657.05x = 9,863,162,869.77
  5. Step 5: Solve for x
    x = 9,863,162,869.77/118,657.05
  6. Step 6: Final answer
    x = 83,123.28

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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.