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Finding the Fourth Proportional to 136,386.59, 188,209.62 and 75,957.21

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Solution

The fourth proportional to 136,386.59, 188,209.62 and 75,957.21 is: 104,818.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,386.59 : 188,209.62 = 75,957.21 : x
  2. Step 2: Convert to fraction form
    136,386.59/188,209.62 = 75,957.21/x
  3. Step 3: Cross multiply
    136,386.59x = 188,209.62 × 75,957.21
  4. Step 4: Simplify right side
    136,386.59x = 14,295,877,630.36
  5. Step 5: Solve for x
    x = 14,295,877,630.36/136,386.59
  6. Step 6: Final answer
    x = 104,818.80

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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.