Home / 142,814.88-197,070.84-79,151.31

Finding the Fourth Proportional to 142,814.88, 197,070.84 and 79,151.31

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Solution

The fourth proportional to 142,814.88, 197,070.84 and 79,151.31 is: 109,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,814.88 : 197,070.84 = 79,151.31 : x
  2. Step 2: Convert to fraction form
    142,814.88/197,070.84 = 79,151.31/x
  3. Step 3: Cross multiply
    142,814.88x = 197,070.84 × 79,151.31
  4. Step 4: Simplify right side
    142,814.88x = 15,598,415,148.80
  5. Step 5: Solve for x
    x = 15,598,415,148.80/142,814.88
  6. Step 6: Final answer
    x = 109,221.22

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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.