Home / 143,925,524.82-198,621,918.45-78,735,428.82

Finding the Fourth Proportional to 143,925,524.82, 198,621,918.45 and 78,735,428.82

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Solution

The fourth proportional to 143,925,524.82, 198,621,918.45 and 78,735,428.82 is: 108,657,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925,524.82 : 198,621,918.45 = 78,735,428.82 : x
  2. Step 2: Convert to fraction form
    143,925,524.82/198,621,918.45 = 78,735,428.82/x
  3. Step 3: Cross multiply
    143,925,524.82x = 198,621,918.45 × 78,735,428.82
  4. Step 4: Simplify right side
    143,925,524.82x = 15,638,581,922,211,818
  5. Step 5: Solve for x
    x = 15,638,581,922,211,818/143,925,524.82
  6. Step 6: Final answer
    x = 108,657,459.76

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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.