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Finding the Fourth Proportional to 161,741.70, 242,612.55 and 138,413.70

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Solution

The fourth proportional to 161,741.70, 242,612.55 and 138,413.70 is: 207,620.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,741.70 : 242,612.55 = 138,413.70 : x
  2. Step 2: Convert to fraction form
    161,741.70/242,612.55 = 138,413.70/x
  3. Step 3: Cross multiply
    161,741.70x = 242,612.55 × 138,413.70
  4. Step 4: Simplify right side
    161,741.70x = 33,580,900,711.94
  5. Step 5: Solve for x
    x = 33,580,900,711.94/161,741.70
  6. Step 6: Final answer
    x = 207,620.55

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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.