Home / 143,767,539.45-215,431,868.84-85,360,201.47

Finding the Fourth Proportional to 143,767,539.45, 215,431,868.84 and 85,360,201.47

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Solution

The fourth proportional to 143,767,539.45, 215,431,868.84 and 85,360,201.47 is: 127,910,012.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,767,539.45 : 215,431,868.84 = 85,360,201.47 : x
  2. Step 2: Convert to fraction form
    143,767,539.45/215,431,868.84 = 85,360,201.47/x
  3. Step 3: Cross multiply
    143,767,539.45x = 215,431,868.84 × 85,360,201.47
  4. Step 4: Simplify right side
    143,767,539.45x = 18,389,307,726,814,216
  5. Step 5: Solve for x
    x = 18,389,307,726,814,216/143,767,539.45
  6. Step 6: Final answer
    x = 127,910,012.21

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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.