Home / 143,933,334.05-198,610,931.51-81,205,775.10

Finding the Fourth Proportional to 143,933,334.05, 198,610,931.51 and 81,205,775.10

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Solution

The fourth proportional to 143,933,334.05, 198,610,931.51 and 81,205,775.10 is: 112,054,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,933,334.05 : 198,610,931.51 = 81,205,775.10 : x
  2. Step 2: Convert to fraction form
    143,933,334.05/198,610,931.51 = 81,205,775.10/x
  3. Step 3: Cross multiply
    143,933,334.05x = 198,610,931.51 × 81,205,775.10
  4. Step 4: Simplify right side
    143,933,334.05x = 16,128,354,636,920,322
  5. Step 5: Solve for x
    x = 16,128,354,636,920,322/143,933,334.05
  6. Step 6: Final answer
    x = 112,054,339.21

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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.