Home / 89,102.18-123,123.21-84,783.46

Finding the Fourth Proportional to 89,102.18, 123,123.21 and 84,783.46

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Solution

The fourth proportional to 89,102.18, 123,123.21 and 84,783.46 is: 117,155.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,102.18 : 123,123.21 = 84,783.46 : x
  2. Step 2: Convert to fraction form
    89,102.18/123,123.21 = 84,783.46/x
  3. Step 3: Cross multiply
    89,102.18x = 123,123.21 × 84,783.46
  4. Step 4: Simplify right side
    89,102.18x = 10,438,811,750.11
  5. Step 5: Solve for x
    x = 10,438,811,750.11/89,102.18
  6. Step 6: Final answer
    x = 117,155.51

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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.