Home / 142,779.31-197,024.61-79,115.74

Finding the Fourth Proportional to 142,779.31, 197,024.61 and 79,115.74

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Solution

The fourth proportional to 142,779.31, 197,024.61 and 79,115.74 is: 109,173.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,779.31 : 197,024.61 = 79,115.74 : x
  2. Step 2: Convert to fraction form
    142,779.31/197,024.61 = 79,115.74/x
  3. Step 3: Cross multiply
    142,779.31x = 197,024.61 × 79,115.74
  4. Step 4: Simplify right side
    142,779.31x = 15,587,747,818.36
  5. Step 5: Solve for x
    x = 15,587,747,818.36/142,779.31
  6. Step 6: Final answer
    x = 109,173.72

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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.