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Finding the Fourth Proportional to 134,963.70, 202,150.31 and 87,413.46

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Solution

The fourth proportional to 134,963.70, 202,150.31 and 87,413.46 is: 130,928.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,963.70 : 202,150.31 = 87,413.46 : x
  2. Step 2: Convert to fraction form
    134,963.70/202,150.31 = 87,413.46/x
  3. Step 3: Cross multiply
    134,963.70x = 202,150.31 × 87,413.46
  4. Step 4: Simplify right side
    134,963.70x = 17,670,657,600.11
  5. Step 5: Solve for x
    x = 17,670,657,600.11/134,963.70
  6. Step 6: Final answer
    x = 130,928.97

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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.