Home / 221,711.23-305,985.81-126,202.51

Finding the Fourth Proportional to 221,711.23, 305,985.81 and 126,202.51

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Solution

The fourth proportional to 221,711.23, 305,985.81 and 126,202.51 is: 174,173.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,711.23 : 305,985.81 = 126,202.51 : x
  2. Step 2: Convert to fraction form
    221,711.23/305,985.81 = 126,202.51/x
  3. Step 3: Cross multiply
    221,711.23x = 305,985.81 × 126,202.51
  4. Step 4: Simplify right side
    221,711.23x = 38,616,177,246.38
  5. Step 5: Solve for x
    x = 38,616,177,246.38/221,711.23
  6. Step 6: Final answer
    x = 174,173.30

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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.