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Finding the Fourth Proportional to 108,051.09, 148,932.03 and 72,228.03

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Solution

The fourth proportional to 108,051.09, 148,932.03 and 72,228.03 is: 99,555.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,051.09 : 148,932.03 = 72,228.03 : x
  2. Step 2: Convert to fraction form
    108,051.09/148,932.03 = 72,228.03/x
  3. Step 3: Cross multiply
    108,051.09x = 148,932.03 × 72,228.03
  4. Step 4: Simplify right side
    108,051.09x = 10,757,067,130.80
  5. Step 5: Solve for x
    x = 10,757,067,130.80/108,051.09
  6. Step 6: Final answer
    x = 99,555.38

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1.5x scale

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.