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Finding the Fourth Proportional to 154,482.60, 213,187.14 and 87,413.16

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Solution

The fourth proportional to 154,482.60, 213,187.14 and 87,413.16 is: 120,630.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,482.60 : 213,187.14 = 87,413.16 : x
  2. Step 2: Convert to fraction form
    154,482.60/213,187.14 = 87,413.16/x
  3. Step 3: Cross multiply
    154,482.60x = 213,187.14 × 87,413.16
  4. Step 4: Simplify right side
    154,482.60x = 18,635,361,578.76
  5. Step 5: Solve for x
    x = 18,635,361,578.76/154,482.60
  6. Step 6: Final answer
    x = 120,630.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.