Home / 132,237.58-198,161.84-78,146.58

Finding the Fourth Proportional to 132,237.58, 198,161.84 and 78,146.58

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Solution

The fourth proportional to 132,237.58, 198,161.84 and 78,146.58 is: 117,104.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,237.58 : 198,161.84 = 78,146.58 : x
  2. Step 2: Convert to fraction form
    132,237.58/198,161.84 = 78,146.58/x
  3. Step 3: Cross multiply
    132,237.58x = 198,161.84 × 78,146.58
  4. Step 4: Simplify right side
    132,237.58x = 15,485,670,082.51
  5. Step 5: Solve for x
    x = 15,485,670,082.51/132,237.58
  6. Step 6: Final answer
    x = 117,104.91

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1.5x scale

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.