Home / 117,136.38-161,647.48-63,421.23

Finding the Fourth Proportional to 117,136.38, 161,647.48 and 63,421.23

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Solution

The fourth proportional to 117,136.38, 161,647.48 and 63,421.23 is: 87,520.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,136.38 : 161,647.48 = 63,421.23 : x
  2. Step 2: Convert to fraction form
    117,136.38/161,647.48 = 63,421.23/x
  3. Step 3: Cross multiply
    117,136.38x = 161,647.48 × 63,421.23
  4. Step 4: Simplify right side
    117,136.38x = 10,251,882,008.00
  5. Step 5: Solve for x
    x = 10,251,882,008.00/117,136.38
  6. Step 6: Final answer
    x = 87,520.91

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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.