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Finding the Fourth Proportional to 159,264.68, 219,779.66 and 87,642.86

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Solution

The fourth proportional to 159,264.68, 219,779.66 and 87,642.86 is: 120,944.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,264.68 : 219,779.66 = 87,642.86 : x
  2. Step 2: Convert to fraction form
    159,264.68/219,779.66 = 87,642.86/x
  3. Step 3: Cross multiply
    159,264.68x = 219,779.66 × 87,642.86
  4. Step 4: Simplify right side
    159,264.68x = 19,262,117,092.44
  5. Step 5: Solve for x
    x = 19,262,117,092.44/159,264.68
  6. Step 6: Final answer
    x = 120,944.06

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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.