Home / 75,798.80-113,136.82-71,129.36

Finding the Fourth Proportional to 75,798.80, 113,136.82 and 71,129.36

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Solution

The fourth proportional to 75,798.80, 113,136.82 and 71,129.36 is: 106,167.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,798.80 : 113,136.82 = 71,129.36 : x
  2. Step 2: Convert to fraction form
    75,798.80/113,136.82 = 71,129.36/x
  3. Step 3: Cross multiply
    75,798.80x = 113,136.82 × 71,129.36
  4. Step 4: Simplify right side
    75,798.80x = 8,047,349,599.04
  5. Step 5: Solve for x
    x = 8,047,349,599.04/75,798.80
  6. Step 6: Final answer
    x = 106,167.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.