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Finding the Fourth Proportional to 187,763, 259,113 and 112,329.32

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Solution

The fourth proportional to 187,763, 259,113 and 112,329.32 is: 155,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,763 : 259,113 = 112,329.32 : x
  2. Step 2: Convert to fraction form
    187,763/259,113 = 112,329.32/x
  3. Step 3: Cross multiply
    187,763x = 259,113 × 112,329.32
  4. Step 4: Simplify right side
    187,763x = 29,105,987,093.16
  5. Step 5: Solve for x
    x = 29,105,987,093.16/187,763
  6. Step 6: Final answer
    x = 155,014.50

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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.