Home / 128,255.28-192,426.66-69,097.02

Finding the Fourth Proportional to 128,255.28, 192,426.66 and 69,097.02

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Solution

The fourth proportional to 128,255.28, 192,426.66 and 69,097.02 is: 103,669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,255.28 : 192,426.66 = 69,097.02 : x
  2. Step 2: Convert to fraction form
    128,255.28/192,426.66 = 69,097.02/x
  3. Step 3: Cross multiply
    128,255.28x = 192,426.66 × 69,097.02
  4. Step 4: Simplify right side
    128,255.28x = 13,296,108,774.55
  5. Step 5: Solve for x
    x = 13,296,108,774.55/128,255.28
  6. Step 6: Final answer
    x = 103,669.09

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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.