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Finding the Fourth Proportional to 133,200.64, 183,772.80 and 87,901.12

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Solution

The fourth proportional to 133,200.64, 183,772.80 and 87,901.12 is: 121,274.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,200.64 : 183,772.80 = 87,901.12 : x
  2. Step 2: Convert to fraction form
    133,200.64/183,772.80 = 87,901.12/x
  3. Step 3: Cross multiply
    133,200.64x = 183,772.80 × 87,901.12
  4. Step 4: Simplify right side
    133,200.64x = 16,153,834,945.54
  5. Step 5: Solve for x
    x = 16,153,834,945.54/133,200.64
  6. Step 6: Final answer
    x = 121,274.45

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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.