Home / 131,649.90-181,598.92-80,685.51

Finding the Fourth Proportional to 131,649.90, 181,598.92 and 80,685.51

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Solution

The fourth proportional to 131,649.90, 181,598.92 and 80,685.51 is: 111,298.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,649.90 : 181,598.92 = 80,685.51 : x
  2. Step 2: Convert to fraction form
    131,649.90/181,598.92 = 80,685.51/x
  3. Step 3: Cross multiply
    131,649.90x = 181,598.92 × 80,685.51
  4. Step 4: Simplify right side
    131,649.90x = 14,652,401,475.65
  5. Step 5: Solve for x
    x = 14,652,401,475.65/131,649.90
  6. Step 6: Final answer
    x = 111,298.23

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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.