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Finding the Fourth Proportional to 118,696,843.80, 178,045,265.70 and 88,085,842.20

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Solution

The fourth proportional to 118,696,843.80, 178,045,265.70 and 88,085,842.20 is: 132,128,763.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,696,843.80 : 178,045,265.70 = 88,085,842.20 : x
  2. Step 2: Convert to fraction form
    118,696,843.80/178,045,265.70 = 88,085,842.20/x
  3. Step 3: Cross multiply
    118,696,843.80x = 178,045,265.70 × 88,085,842.20
  4. Step 4: Simplify right side
    118,696,843.80x = 15,683,267,178,907,272
  5. Step 5: Solve for x
    x = 15,683,267,178,907,272/118,696,843.80
  6. Step 6: Final answer
    x = 132,128,763.30

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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.