Home / 128,320-192,476.76-34,823.32

Finding the Fourth Proportional to 128,320, 192,476.76 and 34,823.32

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Solution

The fourth proportional to 128,320, 192,476.76 and 34,823.32 is: 52,234.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,320 : 192,476.76 = 34,823.32 : x
  2. Step 2: Convert to fraction form
    128,320/192,476.76 = 34,823.32/x
  3. Step 3: Cross multiply
    128,320x = 192,476.76 × 34,823.32
  4. Step 4: Simplify right side
    128,320x = 6,702,679,806.04
  5. Step 5: Solve for x
    x = 6,702,679,806.04/128,320
  6. Step 6: Final answer
    x = 52,234.10

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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.