Home / 116,872.40-161,298.78-76,620.08

Finding the Fourth Proportional to 116,872.40, 161,298.78 and 76,620.08

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Solution

The fourth proportional to 116,872.40, 161,298.78 and 76,620.08 is: 105,745.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,872.40 : 161,298.78 = 76,620.08 : x
  2. Step 2: Convert to fraction form
    116,872.40/161,298.78 = 76,620.08/x
  3. Step 3: Cross multiply
    116,872.40x = 161,298.78 × 76,620.08
  4. Step 4: Simplify right side
    116,872.40x = 12,358,725,427.50
  5. Step 5: Solve for x
    x = 12,358,725,427.50/116,872.40
  6. Step 6: Final answer
    x = 105,745.46

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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.