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Finding the Fourth Proportional to 131,502.80, 197,254.20 and 91,413.20

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Solution

The fourth proportional to 131,502.80, 197,254.20 and 91,413.20 is: 137,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,502.80 : 197,254.20 = 91,413.20 : x
  2. Step 2: Convert to fraction form
    131,502.80/197,254.20 = 91,413.20/x
  3. Step 3: Cross multiply
    131,502.80x = 197,254.20 × 91,413.20
  4. Step 4: Simplify right side
    131,502.80x = 18,031,637,635.44
  5. Step 5: Solve for x
    x = 18,031,637,635.44/131,502.80
  6. Step 6: Final answer
    x = 137,119.80

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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.