Home / 105,815.80-158,723.70-98,817.40

Finding the Fourth Proportional to 105,815.80, 158,723.70 and 98,817.40

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Solution

The fourth proportional to 105,815.80, 158,723.70 and 98,817.40 is: 148,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,815.80 : 158,723.70 = 98,817.40 : x
  2. Step 2: Convert to fraction form
    105,815.80/158,723.70 = 98,817.40/x
  3. Step 3: Cross multiply
    105,815.80x = 158,723.70 × 98,817.40
  4. Step 4: Simplify right side
    105,815.80x = 15,684,663,352.38
  5. Step 5: Solve for x
    x = 15,684,663,352.38/105,815.80
  6. Step 6: Final answer
    x = 148,226.10

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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.