Home / 198,935.65-298,294.41-78,870.97

Finding the Fourth Proportional to 198,935.65, 298,294.41 and 78,870.97

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Solution

The fourth proportional to 198,935.65, 298,294.41 and 78,870.97 is: 118,263.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,935.65 : 298,294.41 = 78,870.97 : x
  2. Step 2: Convert to fraction form
    198,935.65/298,294.41 = 78,870.97/x
  3. Step 3: Cross multiply
    198,935.65x = 298,294.41 × 78,870.97
  4. Step 4: Simplify right side
    198,935.65x = 23,526,767,970.81
  5. Step 5: Solve for x
    x = 23,526,767,970.81/198,935.65
  6. Step 6: Final answer
    x = 118,263.21

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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.