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Finding the Fourth Proportional to 163,363.68, 225,413.01 and 99,721.98

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Solution

The fourth proportional to 163,363.68, 225,413.01 and 99,721.98 is: 137,598.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,363.68 : 225,413.01 = 99,721.98 : x
  2. Step 2: Convert to fraction form
    163,363.68/225,413.01 = 99,721.98/x
  3. Step 3: Cross multiply
    163,363.68x = 225,413.01 × 99,721.98
  4. Step 4: Simplify right side
    163,363.68x = 22,478,631,674.96
  5. Step 5: Solve for x
    x = 22,478,631,674.96/163,363.68
  6. Step 6: Final answer
    x = 137,598.71

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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.