Home / 162,543.85-243,815.78-103,640.65

Finding the Fourth Proportional to 162,543.85, 243,815.78 and 103,640.65

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Solution

The fourth proportional to 162,543.85, 243,815.78 and 103,640.65 is: 155,460.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,543.85 : 243,815.78 = 103,640.65 : x
  2. Step 2: Convert to fraction form
    162,543.85/243,815.78 = 103,640.65/x
  3. Step 3: Cross multiply
    162,543.85x = 243,815.78 × 103,640.65
  4. Step 4: Simplify right side
    162,543.85x = 25,269,225,401.25
  5. Step 5: Solve for x
    x = 25,269,225,401.25/162,543.85
  6. Step 6: Final answer
    x = 155,460.98

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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.