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Finding the Fourth Proportional to 132,649.40, 183,050.16 and 72,218.54

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Solution

The fourth proportional to 132,649.40, 183,050.16 and 72,218.54 is: 99,658.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,649.40 : 183,050.16 = 72,218.54 : x
  2. Step 2: Convert to fraction form
    132,649.40/183,050.16 = 72,218.54/x
  3. Step 3: Cross multiply
    132,649.40x = 183,050.16 × 72,218.54
  4. Step 4: Simplify right side
    132,649.40x = 13,219,615,301.97
  5. Step 5: Solve for x
    x = 13,219,615,301.97/132,649.40
  6. Step 6: Final answer
    x = 99,658.31

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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.