Home / 149,147.26-205,823.63-81,164.16

Finding the Fourth Proportional to 149,147.26, 205,823.63 and 81,164.16

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Solution

The fourth proportional to 149,147.26, 205,823.63 and 81,164.16 is: 112,006.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,147.26 : 205,823.63 = 81,164.16 : x
  2. Step 2: Convert to fraction form
    149,147.26/205,823.63 = 81,164.16/x
  3. Step 3: Cross multiply
    149,147.26x = 205,823.63 × 81,164.16
  4. Step 4: Simplify right side
    149,147.26x = 16,705,502,240.01
  5. Step 5: Solve for x
    x = 16,705,502,240.01/149,147.26
  6. Step 6: Final answer
    x = 112,006.77

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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.