Home / 128,432.50-192,566.72-61,739.94

Finding the Fourth Proportional to 128,432.50, 192,566.72 and 61,739.94

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Solution

The fourth proportional to 128,432.50, 192,566.72 and 61,739.94 is: 92,570.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,432.50 : 192,566.72 = 61,739.94 : x
  2. Step 2: Convert to fraction form
    128,432.50/192,566.72 = 61,739.94/x
  3. Step 3: Cross multiply
    128,432.50x = 192,566.72 × 61,739.94
  4. Step 4: Simplify right side
    128,432.50x = 11,889,057,738.80
  5. Step 5: Solve for x
    x = 11,889,057,738.80/128,432.50
  6. Step 6: Final answer
    x = 92,570.48

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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.