Home / 131,747.19-181,688.31-121,961.58

Finding the Fourth Proportional to 131,747.19, 181,688.31 and 121,961.58

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Solution

The fourth proportional to 131,747.19, 181,688.31 and 121,961.58 is: 168,193.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,747.19 : 181,688.31 = 121,961.58 : x
  2. Step 2: Convert to fraction form
    131,747.19/181,688.31 = 121,961.58/x
  3. Step 3: Cross multiply
    131,747.19x = 181,688.31 × 121,961.58
  4. Step 4: Simplify right side
    131,747.19x = 22,158,993,355.13
  5. Step 5: Solve for x
    x = 22,158,993,355.13/131,747.19
  6. Step 6: Final answer
    x = 168,193.29

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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.