Home / 131,722.88-181,805.28-121,095.68

Finding the Fourth Proportional to 131,722.88, 181,805.28 and 121,095.68

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Solution

The fourth proportional to 131,722.88, 181,805.28 and 121,095.68 is: 167,137.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,722.88 : 181,805.28 = 121,095.68 : x
  2. Step 2: Convert to fraction form
    131,722.88/181,805.28 = 121,095.68/x
  3. Step 3: Cross multiply
    131,722.88x = 181,805.28 × 121,095.68
  4. Step 4: Simplify right side
    131,722.88x = 22,015,834,009.19
  5. Step 5: Solve for x
    x = 22,015,834,009.19/131,722.88
  6. Step 6: Final answer
    x = 167,137.51

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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.