Home / 131,412.89-181,356.50-80,409.62

Finding the Fourth Proportional to 131,412.89, 181,356.50 and 80,409.62

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Solution

The fourth proportional to 131,412.89, 181,356.50 and 80,409.62 is: 110,969.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,412.89 : 181,356.50 = 80,409.62 : x
  2. Step 2: Convert to fraction form
    131,412.89/181,356.50 = 80,409.62/x
  3. Step 3: Cross multiply
    131,412.89x = 181,356.50 × 80,409.62
  4. Step 4: Simplify right side
    131,412.89x = 14,582,807,249.53
  5. Step 5: Solve for x
    x = 14,582,807,249.53/131,412.89
  6. Step 6: Final answer
    x = 110,969.38

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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.