Home / 221,103.09-305,123.27-125,615.02

Finding the Fourth Proportional to 221,103.09, 305,123.27 and 125,615.02

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Solution

The fourth proportional to 221,103.09, 305,123.27 and 125,615.02 is: 173,349.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,103.09 : 305,123.27 = 125,615.02 : x
  2. Step 2: Convert to fraction form
    221,103.09/305,123.27 = 125,615.02/x
  3. Step 3: Cross multiply
    221,103.09x = 305,123.27 × 125,615.02
  4. Step 4: Simplify right side
    221,103.09x = 38,328,065,663.52
  5. Step 5: Solve for x
    x = 38,328,065,663.52/221,103.09
  6. Step 6: Final answer
    x = 173,349.30

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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.