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Finding the Fourth Proportional to 68,601.30, 103,120.65 and 64,664.70

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Solution

The fourth proportional to 68,601.30, 103,120.65 and 64,664.70 is: 97,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,601.30 : 103,120.65 = 64,664.70 : x
  2. Step 2: Convert to fraction form
    68,601.30/103,120.65 = 64,664.70/x
  3. Step 3: Cross multiply
    68,601.30x = 103,120.65 × 64,664.70
  4. Step 4: Simplify right side
    68,601.30x = 6,668,265,896.06
  5. Step 5: Solve for x
    x = 6,668,265,896.06/68,601.30
  6. Step 6: Final answer
    x = 97,203.20

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1.5x scale

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.