Home / 198,935.03-298,293.47-78,870.35

Finding the Fourth Proportional to 198,935.03, 298,293.47 and 78,870.35

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Solution

The fourth proportional to 198,935.03, 298,293.47 and 78,870.35 is: 118,262.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,935.03 : 298,293.47 = 78,870.35 : x
  2. Step 2: Convert to fraction form
    198,935.03/298,293.47 = 78,870.35/x
  3. Step 3: Cross multiply
    198,935.03x = 298,293.47 × 78,870.35
  4. Step 4: Simplify right side
    198,935.03x = 23,526,510,381.61
  5. Step 5: Solve for x
    x = 23,526,510,381.61/198,935.03
  6. Step 6: Final answer
    x = 118,262.28

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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.