Home / 187,890.10-259,388.13-127,781.62

Finding the Fourth Proportional to 187,890.10, 259,388.13 and 127,781.62

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Solution

The fourth proportional to 187,890.10, 259,388.13 and 127,781.62 is: 176,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,890.10 : 259,388.13 = 127,781.62 : x
  2. Step 2: Convert to fraction form
    187,890.10/259,388.13 = 127,781.62/x
  3. Step 3: Cross multiply
    187,890.10x = 259,388.13 × 127,781.62
  4. Step 4: Simplify right side
    187,890.10x = 33,145,035,460.17
  5. Step 5: Solve for x
    x = 33,145,035,460.17/187,890.10
  6. Step 6: Final answer
    x = 176,406.50

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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.