Home / 131,356.08-181,201.35-80,393.51

Finding the Fourth Proportional to 131,356.08, 181,201.35 and 80,393.51

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Solution

The fourth proportional to 131,356.08, 181,201.35 and 80,393.51 is: 110,900.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,356.08 : 181,201.35 = 80,393.51 : x
  2. Step 2: Convert to fraction form
    131,356.08/181,201.35 = 80,393.51/x
  3. Step 3: Cross multiply
    131,356.08x = 181,201.35 × 80,393.51
  4. Step 4: Simplify right side
    131,356.08x = 14,567,412,543.24
  5. Step 5: Solve for x
    x = 14,567,412,543.24/131,356.08
  6. Step 6: Final answer
    x = 110,900.18

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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.