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Finding the Fourth Proportional to 128,098.44, 192,140.04 and 39,352.80

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Solution

The fourth proportional to 128,098.44, 192,140.04 and 39,352.80 is: 59,026.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,098.44 : 192,140.04 = 39,352.80 : x
  2. Step 2: Convert to fraction form
    128,098.44/192,140.04 = 39,352.80/x
  3. Step 3: Cross multiply
    128,098.44x = 192,140.04 × 39,352.80
  4. Step 4: Simplify right side
    128,098.44x = 7,561,248,566.11
  5. Step 5: Solve for x
    x = 7,561,248,566.11/128,098.44
  6. Step 6: Final answer
    x = 59,026.86

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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.