Home / 99,575.12-149,533.14-66,507.68

Finding the Fourth Proportional to 99,575.12, 149,533.14 and 66,507.68

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Solution

The fourth proportional to 99,575.12, 149,533.14 and 66,507.68 is: 99,875.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,575.12 : 149,533.14 = 66,507.68 : x
  2. Step 2: Convert to fraction form
    99,575.12/149,533.14 = 66,507.68/x
  3. Step 3: Cross multiply
    99,575.12x = 149,533.14 × 66,507.68
  4. Step 4: Simplify right side
    99,575.12x = 9,945,102,224.52
  5. Step 5: Solve for x
    x = 9,945,102,224.52/99,575.12
  6. Step 6: Final answer
    x = 99,875.37

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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.