Home / 143,773,331.24-198,385,026.18-81,885,780.20

Finding the Fourth Proportional to 143,773,331.24, 198,385,026.18 and 81,885,780.20

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Solution

The fourth proportional to 143,773,331.24, 198,385,026.18 and 81,885,780.20 is: 112,989,749.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,773,331.24 : 198,385,026.18 = 81,885,780.20 : x
  2. Step 2: Convert to fraction form
    143,773,331.24/198,385,026.18 = 81,885,780.20/x
  3. Step 3: Cross multiply
    143,773,331.24x = 198,385,026.18 × 81,885,780.20
  4. Step 4: Simplify right side
    143,773,331.24x = 16,244,912,648,746,726
  5. Step 5: Solve for x
    x = 16,244,912,648,746,726/143,773,331.24
  6. Step 6: Final answer
    x = 112,989,749.27

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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.