Home / 89,142,472.70-133,713,709.05-81,489,722.30

Finding the Fourth Proportional to 89,142,472.70, 133,713,709.05 and 81,489,722.30

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Solution

The fourth proportional to 89,142,472.70, 133,713,709.05 and 81,489,722.30 is: 122,234,583.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,142,472.70 : 133,713,709.05 = 81,489,722.30 : x
  2. Step 2: Convert to fraction form
    89,142,472.70/133,713,709.05 = 81,489,722.30/x
  3. Step 3: Cross multiply
    89,142,472.70x = 133,713,709.05 × 81,489,722.30
  4. Step 4: Simplify right side
    89,142,472.70x = 10,896,293,018,187,496
  5. Step 5: Solve for x
    x = 10,896,293,018,187,496/89,142,472.70
  6. Step 6: Final answer
    x = 122,234,583.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.