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Finding the Fourth Proportional to 163,400.80, 245,101.20 and 107,413.60

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Solution

The fourth proportional to 163,400.80, 245,101.20 and 107,413.60 is: 161,120.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,400.80 : 245,101.20 = 107,413.60 : x
  2. Step 2: Convert to fraction form
    163,400.80/245,101.20 = 107,413.60/x
  3. Step 3: Cross multiply
    163,400.80x = 245,101.20 × 107,413.60
  4. Step 4: Simplify right side
    163,400.80x = 26,327,202,256.32
  5. Step 5: Solve for x
    x = 26,327,202,256.32/163,400.80
  6. Step 6: Final answer
    x = 161,120.40

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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.