Home / 149,377.74-206,138.63-81,395.19

Finding the Fourth Proportional to 149,377.74, 206,138.63 and 81,395.19

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Solution

The fourth proportional to 149,377.74, 206,138.63 and 81,395.19 is: 112,323.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,377.74 : 206,138.63 = 81,395.19 : x
  2. Step 2: Convert to fraction form
    149,377.74/206,138.63 = 81,395.19/x
  3. Step 3: Cross multiply
    149,377.74x = 206,138.63 × 81,395.19
  4. Step 4: Simplify right side
    149,377.74x = 16,778,692,548.21
  5. Step 5: Solve for x
    x = 16,778,692,548.21/149,377.74
  6. Step 6: Final answer
    x = 112,323.91

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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.