Home / 137,741.90-206,590.17-128,775.74

Finding the Fourth Proportional to 137,741.90, 206,590.17 and 128,775.74

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Solution

The fourth proportional to 137,741.90, 206,590.17 and 128,775.74 is: 193,142.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,741.90 : 206,590.17 = 128,775.74 : x
  2. Step 2: Convert to fraction form
    137,741.90/206,590.17 = 128,775.74/x
  3. Step 3: Cross multiply
    137,741.90x = 206,590.17 × 128,775.74
  4. Step 4: Simplify right side
    137,741.90x = 26,603,802,018.48
  5. Step 5: Solve for x
    x = 26,603,802,018.48/137,741.90
  6. Step 6: Final answer
    x = 193,142.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.