Home / 128,553.14-192,902.63-69,387.50

Finding the Fourth Proportional to 128,553.14, 192,902.63 and 69,387.50

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Solution

The fourth proportional to 128,553.14, 192,902.63 and 69,387.50 is: 104,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,553.14 : 192,902.63 = 69,387.50 : x
  2. Step 2: Convert to fraction form
    128,553.14/192,902.63 = 69,387.50/x
  3. Step 3: Cross multiply
    128,553.14x = 192,902.63 × 69,387.50
  4. Step 4: Simplify right side
    128,553.14x = 13,385,031,374.44
  5. Step 5: Solve for x
    x = 13,385,031,374.44/128,553.14
  6. Step 6: Final answer
    x = 104,120.61

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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.