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Finding the Fourth Proportional to 87,602.40, 131,413.20 and 84,837.60

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Solution

The fourth proportional to 87,602.40, 131,413.20 and 84,837.60 is: 127,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,602.40 : 131,413.20 = 84,837.60 : x
  2. Step 2: Convert to fraction form
    87,602.40/131,413.20 = 84,837.60/x
  3. Step 3: Cross multiply
    87,602.40x = 131,413.20 × 84,837.60
  4. Step 4: Simplify right side
    87,602.40x = 11,148,780,496.32
  5. Step 5: Solve for x
    x = 11,148,780,496.32/87,602.40
  6. Step 6: Final answer
    x = 127,265.70

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1.5x scale

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.