Home / 138,015.24-190,468.53-76,767.90

Finding the Fourth Proportional to 138,015.24, 190,468.53 and 76,767.90

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Solution

The fourth proportional to 138,015.24, 190,468.53 and 76,767.90 is: 105,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,015.24 : 190,468.53 = 76,767.90 : x
  2. Step 2: Convert to fraction form
    138,015.24/190,468.53 = 76,767.90/x
  3. Step 3: Cross multiply
    138,015.24x = 190,468.53 × 76,767.90
  4. Step 4: Simplify right side
    138,015.24x = 14,621,869,064.19
  5. Step 5: Solve for x
    x = 14,621,869,064.19/138,015.24
  6. Step 6: Final answer
    x = 105,943.87

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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.