Home / 99,774.68-149,656.56-60,321.20

Finding the Fourth Proportional to 99,774.68, 149,656.56 and 60,321.20

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Solution

The fourth proportional to 99,774.68, 149,656.56 and 60,321.20 is: 90,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,774.68 : 149,656.56 = 60,321.20 : x
  2. Step 2: Convert to fraction form
    99,774.68/149,656.56 = 60,321.20/x
  3. Step 3: Cross multiply
    99,774.68x = 149,656.56 × 60,321.20
  4. Step 4: Simplify right side
    99,774.68x = 9,027,463,435.01
  5. Step 5: Solve for x
    x = 9,027,463,435.01/99,774.68
  6. Step 6: Final answer
    x = 90,478.50

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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.