Home / 209,990,762.60-315,001,279.18-80,598,372.92

Finding the Fourth Proportional to 209,990,762.60, 315,001,279.18 and 80,598,372.92

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Solution

The fourth proportional to 209,990,762.60, 315,001,279.18 and 80,598,372.92 is: 120,903,368.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,990,762.60 : 315,001,279.18 = 80,598,372.92 : x
  2. Step 2: Convert to fraction form
    209,990,762.60/315,001,279.18 = 80,598,372.92/x
  3. Step 3: Cross multiply
    209,990,762.60x = 315,001,279.18 × 80,598,372.92
  4. Step 4: Simplify right side
    209,990,762.60x = 25,388,590,569,626,672
  5. Step 5: Solve for x
    x = 25,388,590,569,626,672/209,990,762.60
  6. Step 6: Final answer
    x = 120,903,368.58

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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.