Home / 128,209.82-192,053.61-104,601.50

Finding the Fourth Proportional to 128,209.82, 192,053.61 and 104,601.50

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Solution

The fourth proportional to 128,209.82, 192,053.61 and 104,601.50 is: 156,689.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,209.82 : 192,053.61 = 104,601.50 : x
  2. Step 2: Convert to fraction form
    128,209.82/192,053.61 = 104,601.50/x
  3. Step 3: Cross multiply
    128,209.82x = 192,053.61 × 104,601.50
  4. Step 4: Simplify right side
    128,209.82x = 20,089,095,686.42
  5. Step 5: Solve for x
    x = 20,089,095,686.42/128,209.82
  6. Step 6: Final answer
    x = 156,689.21

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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.