Home / 89,193.12-123,037.20-63,699.36

Finding the Fourth Proportional to 89,193.12, 123,037.20 and 63,699.36

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Solution

The fourth proportional to 89,193.12, 123,037.20 and 63,699.36 is: 87,869.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,193.12 : 123,037.20 = 63,699.36 : x
  2. Step 2: Convert to fraction form
    89,193.12/123,037.20 = 63,699.36/x
  3. Step 3: Cross multiply
    89,193.12x = 123,037.20 × 63,699.36
  4. Step 4: Simplify right side
    89,193.12x = 7,837,390,896.19
  5. Step 5: Solve for x
    x = 7,837,390,896.19/89,193.12
  6. Step 6: Final answer
    x = 87,869.90

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1.5x scale

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.