Home / 218,332.78-301,297.11-121,535.10

Finding the Fourth Proportional to 218,332.78, 301,297.11 and 121,535.10

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Solution

The fourth proportional to 218,332.78, 301,297.11 and 121,535.10 is: 167,717.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,332.78 : 301,297.11 = 121,535.10 : x
  2. Step 2: Convert to fraction form
    218,332.78/301,297.11 = 121,535.10/x
  3. Step 3: Cross multiply
    218,332.78x = 301,297.11 × 121,535.10
  4. Step 4: Simplify right side
    218,332.78x = 36,618,174,393.56
  5. Step 5: Solve for x
    x = 36,618,174,393.56/218,332.78
  6. Step 6: Final answer
    x = 167,717.25

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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.