Home / 149,136.26-205,801.98-85,429.76

Finding the Fourth Proportional to 149,136.26, 205,801.98 and 85,429.76

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Solution

The fourth proportional to 149,136.26, 205,801.98 and 85,429.76 is: 117,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,136.26 : 205,801.98 = 85,429.76 : x
  2. Step 2: Convert to fraction form
    149,136.26/205,801.98 = 85,429.76/x
  3. Step 3: Cross multiply
    149,136.26x = 205,801.98 × 85,429.76
  4. Step 4: Simplify right side
    149,136.26x = 17,581,613,758.92
  5. Step 5: Solve for x
    x = 17,581,613,758.92/149,136.26
  6. Step 6: Final answer
    x = 117,889.60

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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.