Home / 120,144.56-181,027.85-99,543.02

Finding the Fourth Proportional to 120,144.56, 181,027.85 and 99,543.02

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Solution

The fourth proportional to 120,144.56, 181,027.85 and 99,543.02 is: 149,986.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,144.56 : 181,027.85 = 99,543.02 : x
  2. Step 2: Convert to fraction form
    120,144.56/181,027.85 = 99,543.02/x
  3. Step 3: Cross multiply
    120,144.56x = 181,027.85 × 99,543.02
  4. Step 4: Simplify right side
    120,144.56x = 18,020,058,893.11
  5. Step 5: Solve for x
    x = 18,020,058,893.11/120,144.56
  6. Step 6: Final answer
    x = 149,986.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.