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Finding the Fourth Proportional to 159,165.42, 219,648.39 and 87,550.89

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Solution

The fourth proportional to 159,165.42, 219,648.39 and 87,550.89 is: 120,820.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,165.42 : 219,648.39 = 87,550.89 : x
  2. Step 2: Convert to fraction form
    159,165.42/219,648.39 = 87,550.89/x
  3. Step 3: Cross multiply
    159,165.42x = 219,648.39 × 87,550.89
  4. Step 4: Simplify right side
    159,165.42x = 19,230,411,593.81
  5. Step 5: Solve for x
    x = 19,230,411,593.81/159,165.42
  6. Step 6: Final answer
    x = 120,820.29

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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.