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Finding the Fourth Proportional to 160,185.60, 221,202.90 and 128,585.88

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Solution

The fourth proportional to 160,185.60, 221,202.90 and 128,585.88 is: 177,566.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,185.60 : 221,202.90 = 128,585.88 : x
  2. Step 2: Convert to fraction form
    160,185.60/221,202.90 = 128,585.88/x
  3. Step 3: Cross multiply
    160,185.60x = 221,202.90 × 128,585.88
  4. Step 4: Simplify right side
    160,185.60x = 28,443,569,555.05
  5. Step 5: Solve for x
    x = 28,443,569,555.05/160,185.60
  6. Step 6: Final answer
    x = 177,566.33

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1.5x scale

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.