Home / 128,308.33-192,396.77-68,370.95

Finding the Fourth Proportional to 128,308.33, 192,396.77 and 68,370.95

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Solution

The fourth proportional to 128,308.33, 192,396.77 and 68,370.95 is: 102,521.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,308.33 : 192,396.77 = 68,370.95 : x
  2. Step 2: Convert to fraction form
    128,308.33/192,396.77 = 68,370.95/x
  3. Step 3: Cross multiply
    128,308.33x = 192,396.77 × 68,370.95
  4. Step 4: Simplify right side
    128,308.33x = 13,154,349,599.98
  5. Step 5: Solve for x
    x = 13,154,349,599.98/128,308.33
  6. Step 6: Final answer
    x = 102,521.40

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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.