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Finding the Fourth Proportional to 120,755.40, 181,133.10 and 101,218.20

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Solution

The fourth proportional to 120,755.40, 181,133.10 and 101,218.20 is: 151,827.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,755.40 : 181,133.10 = 101,218.20 : x
  2. Step 2: Convert to fraction form
    120,755.40/181,133.10 = 101,218.20/x
  3. Step 3: Cross multiply
    120,755.40x = 181,133.10 × 101,218.20
  4. Step 4: Simplify right side
    120,755.40x = 18,333,966,342.42
  5. Step 5: Solve for x
    x = 18,333,966,342.42/120,755.40
  6. Step 6: Final answer
    x = 151,827.30

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1.5x scale

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.