Home / 89,142,429.70-133,713,644.55-81,489,679.30

Finding the Fourth Proportional to 89,142,429.70, 133,713,644.55 and 81,489,679.30

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Solution

The fourth proportional to 89,142,429.70, 133,713,644.55 and 81,489,679.30 is: 122,234,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,142,429.70 : 133,713,644.55 = 81,489,679.30 : x
  2. Step 2: Convert to fraction form
    89,142,429.70/133,713,644.55 = 81,489,679.30/x
  3. Step 3: Cross multiply
    89,142,429.70x = 133,713,644.55 × 81,489,679.30
  4. Step 4: Simplify right side
    89,142,429.70x = 10,896,282,012,413,692
  5. Step 5: Solve for x
    x = 10,896,282,012,413,692/89,142,429.70
  6. Step 6: Final answer
    x = 122,234,518.95

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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.