Home / 142,175,705.38-196,202,740.36-79,451,803.78

Finding the Fourth Proportional to 142,175,705.38, 196,202,740.36 and 79,451,803.78

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Solution

The fourth proportional to 142,175,705.38, 196,202,740.36 and 79,451,803.78 is: 109,643,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,175,705.38 : 196,202,740.36 = 79,451,803.78 : x
  2. Step 2: Convert to fraction form
    142,175,705.38/196,202,740.36 = 79,451,803.78/x
  3. Step 3: Cross multiply
    142,175,705.38x = 196,202,740.36 × 79,451,803.78
  4. Step 4: Simplify right side
    142,175,705.38x = 15,588,661,628,181,008
  5. Step 5: Solve for x
    x = 15,588,661,628,181,008/142,175,705.38
  6. Step 6: Final answer
    x = 109,643,638.39

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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.