Home / 136,036.13-187,821.32-121,651.20

Finding the Fourth Proportional to 136,036.13, 187,821.32 and 121,651.20

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Solution

The fourth proportional to 136,036.13, 187,821.32 and 121,651.20 is: 167,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,036.13 : 187,821.32 = 121,651.20 : x
  2. Step 2: Convert to fraction form
    136,036.13/187,821.32 = 121,651.20/x
  3. Step 3: Cross multiply
    136,036.13x = 187,821.32 × 121,651.20
  4. Step 4: Simplify right side
    136,036.13x = 22,848,688,355.33
  5. Step 5: Solve for x
    x = 22,848,688,355.33/136,036.13
  6. Step 6: Final answer
    x = 167,960.45

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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.