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Finding the Fourth Proportional to 121,036.60, 181,530.60 and 57,856.60

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Solution

The fourth proportional to 121,036.60, 181,530.60 and 57,856.60 is: 86,773.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,036.60 : 181,530.60 = 57,856.60 : x
  2. Step 2: Convert to fraction form
    121,036.60/181,530.60 = 57,856.60/x
  3. Step 3: Cross multiply
    121,036.60x = 181,530.60 × 57,856.60
  4. Step 4: Simplify right side
    121,036.60x = 10,502,743,311.96
  5. Step 5: Solve for x
    x = 10,502,743,311.96/121,036.60
  6. Step 6: Final answer
    x = 86,773.28

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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.