Home / 221,135.73-305,167.40-125,642.55

Finding the Fourth Proportional to 221,135.73, 305,167.40 and 125,642.55

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Solution

The fourth proportional to 221,135.73, 305,167.40 and 125,642.55 is: 173,386.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,135.73 : 305,167.40 = 125,642.55 : x
  2. Step 2: Convert to fraction form
    221,135.73/305,167.40 = 125,642.55/x
  3. Step 3: Cross multiply
    221,135.73x = 305,167.40 × 125,642.55
  4. Step 4: Simplify right side
    221,135.73x = 38,342,009,684.66
  5. Step 5: Solve for x
    x = 38,342,009,684.66/221,135.73
  6. Step 6: Final answer
    x = 173,386.77

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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.