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Finding the Fourth Proportional to 187,894.75, 259,430.84 and 120,943.39

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Solution

The fourth proportional to 187,894.75, 259,430.84 and 120,943.39 is: 166,989.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,894.75 : 259,430.84 = 120,943.39 : x
  2. Step 2: Convert to fraction form
    187,894.75/259,430.84 = 120,943.39/x
  3. Step 3: Cross multiply
    187,894.75x = 259,430.84 × 120,943.39
  4. Step 4: Simplify right side
    187,894.75x = 31,376,445,260.15
  5. Step 5: Solve for x
    x = 31,376,445,260.15/187,894.75
  6. Step 6: Final answer
    x = 166,989.47

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1.5x scale

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.