Home / 131,152.16-181,003.11-80,187.77

Finding the Fourth Proportional to 131,152.16, 181,003.11 and 80,187.77

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Solution

The fourth proportional to 131,152.16, 181,003.11 and 80,187.77 is: 110,667.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,152.16 : 181,003.11 = 80,187.77 : x
  2. Step 2: Convert to fraction form
    131,152.16/181,003.11 = 80,187.77/x
  3. Step 3: Cross multiply
    131,152.16x = 181,003.11 × 80,187.77
  4. Step 4: Simplify right side
    131,152.16x = 14,514,235,905.77
  5. Step 5: Solve for x
    x = 14,514,235,905.77/131,152.16
  6. Step 6: Final answer
    x = 110,667.15

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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.