Home / 131,323.73-181,219.32-77,613.75

Finding the Fourth Proportional to 131,323.73, 181,219.32 and 77,613.75

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Solution

The fourth proportional to 131,323.73, 181,219.32 and 77,613.75 is: 107,102.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,323.73 : 181,219.32 = 77,613.75 : x
  2. Step 2: Convert to fraction form
    131,323.73/181,219.32 = 77,613.75/x
  3. Step 3: Cross multiply
    131,323.73x = 181,219.32 × 77,613.75
  4. Step 4: Simplify right side
    131,323.73x = 14,065,110,997.65
  5. Step 5: Solve for x
    x = 14,065,110,997.65/131,323.73
  6. Step 6: Final answer
    x = 107,102.59

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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.