Home / 223,146.19-307,945.45-121,171.85

Finding the Fourth Proportional to 223,146.19, 307,945.45 and 121,171.85

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Solution

The fourth proportional to 223,146.19, 307,945.45 and 121,171.85 is: 167,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,146.19 : 307,945.45 = 121,171.85 : x
  2. Step 2: Convert to fraction form
    223,146.19/307,945.45 = 121,171.85/x
  3. Step 3: Cross multiply
    223,146.19x = 307,945.45 × 121,171.85
  4. Step 4: Simplify right side
    223,146.19x = 37,314,319,875.58
  5. Step 5: Solve for x
    x = 37,314,319,875.58/223,146.19
  6. Step 6: Final answer
    x = 167,219.17

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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.