Home / 99,028.20-148,688.10-76,866.60

Finding the Fourth Proportional to 99,028.20, 148,688.10 and 76,866.60

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Solution

The fourth proportional to 99,028.20, 148,688.10 and 76,866.60 is: 115,413.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,028.20 : 148,688.10 = 76,866.60 : x
  2. Step 2: Convert to fraction form
    99,028.20/148,688.10 = 76,866.60/x
  3. Step 3: Cross multiply
    99,028.20x = 148,688.10 × 76,866.60
  4. Step 4: Simplify right side
    99,028.20x = 11,429,148,707.46
  5. Step 5: Solve for x
    x = 11,429,148,707.46/99,028.20
  6. Step 6: Final answer
    x = 115,413.07

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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.