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Finding the Fourth Proportional to 160,721.60, 221,750.88 and 93,640.64

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Solution

The fourth proportional to 160,721.60, 221,750.88 and 93,640.64 is: 129,197.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,721.60 : 221,750.88 = 93,640.64 : x
  2. Step 2: Convert to fraction form
    160,721.60/221,750.88 = 93,640.64/x
  3. Step 3: Cross multiply
    160,721.60x = 221,750.88 × 93,640.64
  4. Step 4: Simplify right side
    160,721.60x = 20,764,894,323.76
  5. Step 5: Solve for x
    x = 20,764,894,323.76/160,721.60
  6. Step 6: Final answer
    x = 129,197.91

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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.