Home / 142,779.10-197,036.52-79,118.26

Finding the Fourth Proportional to 142,779.10, 197,036.52 and 79,118.26

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Solution

The fourth proportional to 142,779.10, 197,036.52 and 79,118.26 is: 109,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,779.10 : 197,036.52 = 79,118.26 : x
  2. Step 2: Convert to fraction form
    142,779.10/197,036.52 = 79,118.26/x
  3. Step 3: Cross multiply
    142,779.10x = 197,036.52 × 79,118.26
  4. Step 4: Simplify right side
    142,779.10x = 15,589,186,618.86
  5. Step 5: Solve for x
    x = 15,589,186,618.86/142,779.10
  6. Step 6: Final answer
    x = 109,183.95

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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.