Home / 220,258.72-330,374.70-78,111.04

Finding the Fourth Proportional to 220,258.72, 330,374.70 and 78,111.04

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Solution

The fourth proportional to 220,258.72, 330,374.70 and 78,111.04 is: 117,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,258.72 : 330,374.70 = 78,111.04 : x
  2. Step 2: Convert to fraction form
    220,258.72/330,374.70 = 78,111.04/x
  3. Step 3: Cross multiply
    220,258.72x = 330,374.70 × 78,111.04
  4. Step 4: Simplify right side
    220,258.72x = 25,805,911,406.69
  5. Step 5: Solve for x
    x = 25,805,911,406.69/220,258.72
  6. Step 6: Final answer
    x = 117,161.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.