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Finding the Fourth Proportional to 159,316.70, 219,855.33 and 87,695.19

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Solution

The fourth proportional to 159,316.70, 219,855.33 and 87,695.19 is: 121,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,316.70 : 219,855.33 = 87,695.19 : x
  2. Step 2: Convert to fraction form
    159,316.70/219,855.33 = 87,695.19/x
  3. Step 3: Cross multiply
    159,316.70x = 219,855.33 × 87,695.19
  4. Step 4: Simplify right side
    159,316.70x = 19,280,254,936.86
  5. Step 5: Solve for x
    x = 19,280,254,936.86/159,316.70
  6. Step 6: Final answer
    x = 121,018.42

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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.