Home / 121,036.52-166,989.39-86,552.12

Finding the Fourth Proportional to 121,036.52, 166,989.39 and 86,552.12

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Solution

The fourth proportional to 121,036.52, 166,989.39 and 86,552.12 is: 119,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,036.52 : 166,989.39 = 86,552.12 : x
  2. Step 2: Convert to fraction form
    121,036.52/166,989.39 = 86,552.12/x
  3. Step 3: Cross multiply
    121,036.52x = 166,989.39 × 86,552.12
  4. Step 4: Simplify right side
    121,036.52x = 14,453,285,722.01
  5. Step 5: Solve for x
    x = 14,453,285,722.01/121,036.52
  6. Step 6: Final answer
    x = 119,412.60

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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.