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Finding the Fourth Proportional to 159,269.86, 219,792.45 and 87,649.87

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Solution

The fourth proportional to 159,269.86, 219,792.45 and 87,649.87 is: 120,956.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,269.86 : 219,792.45 = 87,649.87 : x
  2. Step 2: Convert to fraction form
    159,269.86/219,792.45 = 87,649.87/x
  3. Step 3: Cross multiply
    159,269.86x = 219,792.45 × 87,649.87
  4. Step 4: Simplify right side
    159,269.86x = 19,264,779,669.48
  5. Step 5: Solve for x
    x = 19,264,779,669.48/159,269.86
  6. Step 6: Final answer
    x = 120,956.84

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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.