Home / 115,132,369.60-172,649,396.11-66,643,692.76

Finding the Fourth Proportional to 115,132,369.60, 172,649,396.11 and 66,643,692.76

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Solution

The fourth proportional to 115,132,369.60, 172,649,396.11 and 66,643,692.76 is: 99,937,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,132,369.60 : 172,649,396.11 = 66,643,692.76 : x
  2. Step 2: Convert to fraction form
    115,132,369.60/172,649,396.11 = 66,643,692.76/x
  3. Step 3: Cross multiply
    115,132,369.60x = 172,649,396.11 × 66,643,692.76
  4. Step 4: Simplify right side
    115,132,369.60x = 11,505,993,309,554,380
  5. Step 5: Solve for x
    x = 11,505,993,309,554,380/115,132,369.60
  6. Step 6: Final answer
    x = 99,937,084.15

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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.