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Finding the Fourth Proportional to 139,522.51, 192,540.81 and 75,860.16

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Solution

The fourth proportional to 139,522.51, 192,540.81 and 75,860.16 is: 104,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,522.51 : 192,540.81 = 75,860.16 : x
  2. Step 2: Convert to fraction form
    139,522.51/192,540.81 = 75,860.16/x
  3. Step 3: Cross multiply
    139,522.51x = 192,540.81 × 75,860.16
  4. Step 4: Simplify right side
    139,522.51x = 14,606,176,653.13
  5. Step 5: Solve for x
    x = 14,606,176,653.13/139,522.51
  6. Step 6: Final answer
    x = 104,686.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.