Home / 143,457,650.40-197,971,331.76-78,267,560.16

Finding the Fourth Proportional to 143,457,650.40, 197,971,331.76 and 78,267,560.16

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Solution

The fourth proportional to 143,457,650.40, 197,971,331.76 and 78,267,560.16 is: 108,009,109.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,457,650.40 : 197,971,331.76 = 78,267,560.16 : x
  2. Step 2: Convert to fraction form
    143,457,650.40/197,971,331.76 = 78,267,560.16/x
  3. Step 3: Cross multiply
    143,457,650.40x = 197,971,331.76 × 78,267,560.16
  4. Step 4: Simplify right side
    143,457,650.40x = 15,494,733,118,481,118
  5. Step 5: Solve for x
    x = 15,494,733,118,481,118/143,457,650.40
  6. Step 6: Final answer
    x = 108,009,109.83

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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.