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Finding the Fourth Proportional to 101,970.64, 140,728.20 and 59,542.72

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Solution

The fourth proportional to 101,970.64, 140,728.20 and 59,542.72 is: 82,174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,970.64 : 140,728.20 = 59,542.72 : x
  2. Step 2: Convert to fraction form
    101,970.64/140,728.20 = 59,542.72/x
  3. Step 3: Cross multiply
    101,970.64x = 140,728.20 × 59,542.72
  4. Step 4: Simplify right side
    101,970.64x = 8,379,339,808.70
  5. Step 5: Solve for x
    x = 8,379,339,808.70/101,970.64
  6. Step 6: Final answer
    x = 82,174.04

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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.