Home / 143,122,331.20-197,503,428.72-87,460,824.64

Finding the Fourth Proportional to 143,122,331.20, 197,503,428.72 and 87,460,824.64

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Solution

The fourth proportional to 143,122,331.20, 197,503,428.72 and 87,460,824.64 is: 120,692,645.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,122,331.20 : 197,503,428.72 = 87,460,824.64 : x
  2. Step 2: Convert to fraction form
    143,122,331.20/197,503,428.72 = 87,460,824.64/x
  3. Step 3: Cross multiply
    143,122,331.20x = 197,503,428.72 × 87,460,824.64
  4. Step 4: Simplify right side
    143,122,331.20x = 17,273,812,745,078,660
  5. Step 5: Solve for x
    x = 17,273,812,745,078,660/143,122,331.20
  6. Step 6: Final answer
    x = 120,692,645.24

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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.