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Finding the Fourth Proportional to 108,413.24, 162,409.44 and 79,898.40

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Solution

The fourth proportional to 108,413.24, 162,409.44 and 79,898.40 is: 119,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,413.24 : 162,409.44 = 79,898.40 : x
  2. Step 2: Convert to fraction form
    108,413.24/162,409.44 = 79,898.40/x
  3. Step 3: Cross multiply
    108,413.24x = 162,409.44 × 79,898.40
  4. Step 4: Simplify right side
    108,413.24x = 12,976,254,400.90
  5. Step 5: Solve for x
    x = 12,976,254,400.90/108,413.24
  6. Step 6: Final answer
    x = 119,692.52

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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.