Home / 112,412,939.81-155,082,354.39-75,255,190.16

Finding the Fourth Proportional to 112,412,939.81, 155,082,354.39 and 75,255,190.16

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Solution

The fourth proportional to 112,412,939.81, 155,082,354.39 and 75,255,190.16 is: 103,820,361.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,412,939.81 : 155,082,354.39 = 75,255,190.16 : x
  2. Step 2: Convert to fraction form
    112,412,939.81/155,082,354.39 = 75,255,190.16/x
  3. Step 3: Cross multiply
    112,412,939.81x = 155,082,354.39 × 75,255,190.16
  4. Step 4: Simplify right side
    112,412,939.81x = 11,670,752,070,467,664
  5. Step 5: Solve for x
    x = 11,670,752,070,467,664/112,412,939.81
  6. Step 6: Final answer
    x = 103,820,361.69

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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.