Home / 198,045.68-296,638.20-121,912.16

Finding the Fourth Proportional to 198,045.68, 296,638.20 and 121,912.16

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Solution

The fourth proportional to 198,045.68, 296,638.20 and 121,912.16 is: 182,603.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,045.68 : 296,638.20 = 121,912.16 : x
  2. Step 2: Convert to fraction form
    198,045.68/296,638.20 = 121,912.16/x
  3. Step 3: Cross multiply
    198,045.68x = 296,638.20 × 121,912.16
  4. Step 4: Simplify right side
    198,045.68x = 36,163,803,700.51
  5. Step 5: Solve for x
    x = 36,163,803,700.51/198,045.68
  6. Step 6: Final answer
    x = 182,603.35

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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.