Home / 117,089.13-161,586.91-71,758.36

Finding the Fourth Proportional to 117,089.13, 161,586.91 and 71,758.36

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Solution

The fourth proportional to 117,089.13, 161,586.91 and 71,758.36 is: 99,028.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,089.13 : 161,586.91 = 71,758.36 : x
  2. Step 2: Convert to fraction form
    117,089.13/161,586.91 = 71,758.36/x
  3. Step 3: Cross multiply
    117,089.13x = 161,586.91 × 71,758.36
  4. Step 4: Simplify right side
    117,089.13x = 11,595,211,344.80
  5. Step 5: Solve for x
    x = 11,595,211,344.80/117,089.13
  6. Step 6: Final answer
    x = 99,028.93

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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.