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Finding the Fourth Proportional to 139,565.65, 192,643.95 and 110,936.11

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Solution

The fourth proportional to 139,565.65, 192,643.95 and 110,936.11 is: 153,126.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,565.65 : 192,643.95 = 110,936.11 : x
  2. Step 2: Convert to fraction form
    139,565.65/192,643.95 = 110,936.11/x
  3. Step 3: Cross multiply
    139,565.65x = 192,643.95 × 110,936.11
  4. Step 4: Simplify right side
    139,565.65x = 21,371,170,428.03
  5. Step 5: Solve for x
    x = 21,371,170,428.03/139,565.65
  6. Step 6: Final answer
    x = 153,126.29

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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.