Home / 116,889.12-161,360.64-76,605.12

Finding the Fourth Proportional to 116,889.12, 161,360.64 and 76,605.12

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Solution

The fourth proportional to 116,889.12, 161,360.64 and 76,605.12 is: 105,750.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,889.12 : 161,360.64 = 76,605.12 : x
  2. Step 2: Convert to fraction form
    116,889.12/161,360.64 = 76,605.12/x
  3. Step 3: Cross multiply
    116,889.12x = 161,360.64 × 76,605.12
  4. Step 4: Simplify right side
    116,889.12x = 12,361,051,190.48
  5. Step 5: Solve for x
    x = 12,361,051,190.48/116,889.12
  6. Step 6: Final answer
    x = 105,750.23

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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.