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Finding the Fourth Proportional to 144,772.08, 199,831.72 and 90,349.80

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Solution

The fourth proportional to 144,772.08, 199,831.72 and 90,349.80 is: 124,711.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,772.08 : 199,831.72 = 90,349.80 : x
  2. Step 2: Convert to fraction form
    144,772.08/199,831.72 = 90,349.80/x
  3. Step 3: Cross multiply
    144,772.08x = 199,831.72 × 90,349.80
  4. Step 4: Simplify right side
    144,772.08x = 18,054,755,935.66
  5. Step 5: Solve for x
    x = 18,054,755,935.66/144,772.08
  6. Step 6: Final answer
    x = 124,711.59

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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.