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Finding the Fourth Proportional to 133,080.95, 183,648.79 and 72,649.28

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Solution

The fourth proportional to 133,080.95, 183,648.79 and 72,649.28 is: 100,254.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,080.95 : 183,648.79 = 72,649.28 : x
  2. Step 2: Convert to fraction form
    133,080.95/183,648.79 = 72,649.28/x
  3. Step 3: Cross multiply
    133,080.95x = 183,648.79 × 72,649.28
  4. Step 4: Simplify right side
    133,080.95x = 13,341,952,366.37
  5. Step 5: Solve for x
    x = 13,341,952,366.37/133,080.95
  6. Step 6: Final answer
    x = 100,254.41

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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.