Home / 187,664.28-258,981.48-102,781.20

Finding the Fourth Proportional to 187,664.28, 258,981.48 and 102,781.20

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Solution

The fourth proportional to 187,664.28, 258,981.48 and 102,781.20 is: 141,840.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,664.28 : 258,981.48 = 102,781.20 : x
  2. Step 2: Convert to fraction form
    187,664.28/258,981.48 = 102,781.20/x
  3. Step 3: Cross multiply
    187,664.28x = 258,981.48 × 102,781.20
  4. Step 4: Simplify right side
    187,664.28x = 26,618,427,292.18
  5. Step 5: Solve for x
    x = 26,618,427,292.18/187,664.28
  6. Step 6: Final answer
    x = 141,840.67

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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.