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Finding the Fourth Proportional to 144,471.36, 216,413.28 and 117,912

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Solution

The fourth proportional to 144,471.36, 216,413.28 and 117,912 is: 176,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,471.36 : 216,413.28 = 117,912 : x
  2. Step 2: Convert to fraction form
    144,471.36/216,413.28 = 117,912/x
  3. Step 3: Cross multiply
    144,471.36x = 216,413.28 × 117,912
  4. Step 4: Simplify right side
    144,471.36x = 25,517,722,671.36
  5. Step 5: Solve for x
    x = 25,517,722,671.36/144,471.36
  6. Step 6: Final answer
    x = 176,628.24

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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.