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Finding the Fourth Proportional to 159,181.90, 219,667.41 and 87,560.39

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Solution

The fourth proportional to 159,181.90, 219,667.41 and 87,560.39 is: 120,831.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,181.90 : 219,667.41 = 87,560.39 : x
  2. Step 2: Convert to fraction form
    159,181.90/219,667.41 = 87,560.39/x
  3. Step 3: Cross multiply
    159,181.90x = 219,667.41 × 87,560.39
  4. Step 4: Simplify right side
    159,181.90x = 19,234,164,639.06
  5. Step 5: Solve for x
    x = 19,234,164,639.06/159,181.90
  6. Step 6: Final answer
    x = 120,831.36

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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.