Home / 149,135.76-205,801.29-85,429.26

Finding the Fourth Proportional to 149,135.76, 205,801.29 and 85,429.26

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Solution

The fourth proportional to 149,135.76, 205,801.29 and 85,429.26 is: 117,888.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,135.76 : 205,801.29 = 85,429.26 : x
  2. Step 2: Convert to fraction form
    149,135.76/205,801.29 = 85,429.26/x
  3. Step 3: Cross multiply
    149,135.76x = 205,801.29 × 85,429.26
  4. Step 4: Simplify right side
    149,135.76x = 17,581,451,911.75
  5. Step 5: Solve for x
    x = 17,581,451,911.75/149,135.76
  6. Step 6: Final answer
    x = 117,888.91

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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.