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Finding the Fourth Proportional to 99,978.65, 150,005.86 and 60,025.54

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Solution

The fourth proportional to 99,978.65, 150,005.86 and 60,025.54 is: 90,061.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,978.65 : 150,005.86 = 60,025.54 : x
  2. Step 2: Convert to fraction form
    99,978.65/150,005.86 = 60,025.54/x
  3. Step 3: Cross multiply
    99,978.65x = 150,005.86 × 60,025.54
  4. Step 4: Simplify right side
    99,978.65x = 9,004,182,749.66
  5. Step 5: Solve for x
    x = 9,004,182,749.66/99,978.65
  6. Step 6: Final answer
    x = 90,061.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.