Home / 223,112.88-307,898.42-121,139.55

Finding the Fourth Proportional to 223,112.88, 307,898.42 and 121,139.55

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Solution

The fourth proportional to 223,112.88, 307,898.42 and 121,139.55 is: 167,174.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,112.88 : 307,898.42 = 121,139.55 : x
  2. Step 2: Convert to fraction form
    223,112.88/307,898.42 = 121,139.55/x
  3. Step 3: Cross multiply
    223,112.88x = 307,898.42 × 121,139.55
  4. Step 4: Simplify right side
    223,112.88x = 37,298,675,438.81
  5. Step 5: Solve for x
    x = 37,298,675,438.81/223,112.88
  6. Step 6: Final answer
    x = 167,174.01

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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.