Home / 128,200.95-192,340.26-90,833.31

Finding the Fourth Proportional to 128,200.95, 192,340.26 and 90,833.31

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Solution

The fourth proportional to 128,200.95, 192,340.26 and 90,833.31 is: 136,277.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200.95 : 192,340.26 = 90,833.31 : x
  2. Step 2: Convert to fraction form
    128,200.95/192,340.26 = 90,833.31/x
  3. Step 3: Cross multiply
    128,200.95x = 192,340.26 × 90,833.31
  4. Step 4: Simplify right side
    128,200.95x = 17,470,902,462.06
  5. Step 5: Solve for x
    x = 17,470,902,462.06/128,200.95
  6. Step 6: Final answer
    x = 136,277.48

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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.