Home / 155,534,321.34-214,639,158.15-85,918,242.78

Finding the Fourth Proportional to 155,534,321.34, 214,639,158.15 and 85,918,242.78

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Solution

The fourth proportional to 155,534,321.34, 214,639,158.15 and 85,918,242.78 is: 118,568,166.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,534,321.34 : 214,639,158.15 = 85,918,242.78 : x
  2. Step 2: Convert to fraction form
    155,534,321.34/214,639,158.15 = 85,918,242.78/x
  3. Step 3: Cross multiply
    155,534,321.34x = 214,639,158.15 × 85,918,242.78
  4. Step 4: Simplify right side
    155,534,321.34x = 18,441,419,300,026,516
  5. Step 5: Solve for x
    x = 18,441,419,300,026,516/155,534,321.34
  6. Step 6: Final answer
    x = 118,568,166.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.