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Finding the Fourth Proportional to 187,652.76, 258,888 and 114,989.28

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Solution

The fourth proportional to 187,652.76, 258,888 and 114,989.28 is: 158,640.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,652.76 : 258,888 = 114,989.28 : x
  2. Step 2: Convert to fraction form
    187,652.76/258,888 = 114,989.28/x
  3. Step 3: Cross multiply
    187,652.76x = 258,888 × 114,989.28
  4. Step 4: Simplify right side
    187,652.76x = 29,769,344,720.64
  5. Step 5: Solve for x
    x = 29,769,344,720.64/187,652.76
  6. Step 6: Final answer
    x = 158,640.59

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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.