Home / 107,340.32-161,039.64-76,372.40

Finding the Fourth Proportional to 107,340.32, 161,039.64 and 76,372.40

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Solution

The fourth proportional to 107,340.32, 161,039.64 and 76,372.40 is: 114,579.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,340.32 : 161,039.64 = 76,372.40 : x
  2. Step 2: Convert to fraction form
    107,340.32/161,039.64 = 76,372.40/x
  3. Step 3: Cross multiply
    107,340.32x = 161,039.64 × 76,372.40
  4. Step 4: Simplify right side
    107,340.32x = 12,298,983,801.94
  5. Step 5: Solve for x
    x = 12,298,983,801.94/107,340.32
  6. Step 6: Final answer
    x = 114,579.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.