Home / 145,066,057.38-200,194,749.72-78,990,177.78

Finding the Fourth Proportional to 145,066,057.38, 200,194,749.72 and 78,990,177.78

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Solution

The fourth proportional to 145,066,057.38, 200,194,749.72 and 78,990,177.78 is: 109,008,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,066,057.38 : 200,194,749.72 = 78,990,177.78 : x
  2. Step 2: Convert to fraction form
    145,066,057.38/200,194,749.72 = 78,990,177.78/x
  3. Step 3: Cross multiply
    145,066,057.38x = 200,194,749.72 × 78,990,177.78
  4. Step 4: Simplify right side
    145,066,057.38x = 15,813,418,871,005,406
  5. Step 5: Solve for x
    x = 15,813,418,871,005,406/145,066,057.38
  6. Step 6: Final answer
    x = 109,008,400.43

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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.