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Finding the Fourth Proportional to 151,278.89, 208,792.89 and 87,616.69

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Solution

The fourth proportional to 151,278.89, 208,792.89 and 87,616.69 is: 120,927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,278.89 : 208,792.89 = 87,616.69 : x
  2. Step 2: Convert to fraction form
    151,278.89/208,792.89 = 87,616.69/x
  3. Step 3: Cross multiply
    151,278.89x = 208,792.89 × 87,616.69
  4. Step 4: Simplify right side
    151,278.89x = 18,293,741,395.35
  5. Step 5: Solve for x
    x = 18,293,741,395.35/151,278.89
  6. Step 6: Final answer
    x = 120,927.26

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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.