Home / 149,377.48-206,138.31-81,395.02

Finding the Fourth Proportional to 149,377.48, 206,138.31 and 81,395.02

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Solution

The fourth proportional to 149,377.48, 206,138.31 and 81,395.02 is: 112,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,377.48 : 206,138.31 = 81,395.02 : x
  2. Step 2: Convert to fraction form
    149,377.48/206,138.31 = 81,395.02/x
  3. Step 3: Cross multiply
    149,377.48x = 206,138.31 × 81,395.02
  4. Step 4: Simplify right side
    149,377.48x = 16,778,630,834.52
  5. Step 5: Solve for x
    x = 16,778,630,834.52/149,377.48
  6. Step 6: Final answer
    x = 112,323.70

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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.