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Finding the Fourth Proportional to 159,210.89, 219,703.08 and 87,589.07

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Solution

The fourth proportional to 159,210.89, 219,703.08 and 87,589.07 is: 120,868.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,210.89 : 219,703.08 = 87,589.07 : x
  2. Step 2: Convert to fraction form
    159,210.89/219,703.08 = 87,589.07/x
  3. Step 3: Cross multiply
    159,210.89x = 219,703.08 × 87,589.07
  4. Step 4: Simplify right side
    159,210.89x = 19,243,587,354.82
  5. Step 5: Solve for x
    x = 19,243,587,354.82/159,210.89
  6. Step 6: Final answer
    x = 120,868.54

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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.