Home / 142,175,742.21-196,202,790.14-79,451,840.27

Finding the Fourth Proportional to 142,175,742.21, 196,202,790.14 and 79,451,840.27

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Solution

The fourth proportional to 142,175,742.21, 196,202,790.14 and 79,451,840.27 is: 109,643,688.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,175,742.21 : 196,202,790.14 = 79,451,840.27 : x
  2. Step 2: Convert to fraction form
    142,175,742.21/196,202,790.14 = 79,451,840.27/x
  3. Step 3: Cross multiply
    142,175,742.21x = 196,202,790.14 × 79,451,840.27
  4. Step 4: Simplify right side
    142,175,742.21x = 15,588,672,741,888,068
  5. Step 5: Solve for x
    x = 15,588,672,741,888,068/142,175,742.21
  6. Step 6: Final answer
    x = 109,643,688.15

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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.