Home / 400,981.02-601,605.81-131,121.61

Finding the Fourth Proportional to 400,981.02, 601,605.81 and 131,121.61

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Solution

The fourth proportional to 400,981.02, 601,605.81 and 131,121.61 is: 196,726.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,981.02 : 601,605.81 = 131,121.61 : x
  2. Step 2: Convert to fraction form
    400,981.02/601,605.81 = 131,121.61/x
  3. Step 3: Cross multiply
    400,981.02x = 601,605.81 × 131,121.61
  4. Step 4: Simplify right side
    400,981.02x = 78,883,518,728.92
  5. Step 5: Solve for x
    x = 78,883,518,728.92/400,981.02
  6. Step 6: Final answer
    x = 196,726.32

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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.