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Finding the Fourth Proportional to 101,664.60, 140,346.72 and 67,693.20

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Solution

The fourth proportional to 101,664.60, 140,346.72 and 67,693.20 is: 93,449.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,664.60 : 140,346.72 = 67,693.20 : x
  2. Step 2: Convert to fraction form
    101,664.60/140,346.72 = 67,693.20/x
  3. Step 3: Cross multiply
    101,664.60x = 140,346.72 × 67,693.20
  4. Step 4: Simplify right side
    101,664.60x = 9,500,518,586.30
  5. Step 5: Solve for x
    x = 9,500,518,586.30/101,664.60
  6. Step 6: Final answer
    x = 93,449.62

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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.