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Finding the Fourth Proportional to 133,360.80, 199,772.40 and 83,287.20

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Solution

The fourth proportional to 133,360.80, 199,772.40 and 83,287.20 is: 124,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,360.80 : 199,772.40 = 83,287.20 : x
  2. Step 2: Convert to fraction form
    133,360.80/199,772.40 = 83,287.20/x
  3. Step 3: Cross multiply
    133,360.80x = 199,772.40 × 83,287.20
  4. Step 4: Simplify right side
    133,360.80x = 16,638,483,833.28
  5. Step 5: Solve for x
    x = 16,638,483,833.28/133,360.80
  6. Step 6: Final answer
    x = 124,762.93

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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.