Home / 209,997,719.86-289,753,588.65-120,672,410.66

Finding the Fourth Proportional to 209,997,719.86, 289,753,588.65 and 120,672,410.66

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Solution

The fourth proportional to 209,997,719.86, 289,753,588.65 and 120,672,410.66 is: 166,503,065.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,997,719.86 : 289,753,588.65 = 120,672,410.66 : x
  2. Step 2: Convert to fraction form
    209,997,719.86/289,753,588.65 = 120,672,410.66/x
  3. Step 3: Cross multiply
    209,997,719.86x = 289,753,588.65 × 120,672,410.66
  4. Step 4: Simplify right side
    209,997,719.86x = 34,965,264,039,178,148
  5. Step 5: Solve for x
    x = 34,965,264,039,178,148/209,997,719.86
  6. Step 6: Final answer
    x = 166,503,065.19

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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.