Home / 81,166.30-121,749.45-61,483.30

Finding the Fourth Proportional to 81,166.30, 121,749.45 and 61,483.30

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Solution

The fourth proportional to 81,166.30, 121,749.45 and 61,483.30 is: 92,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,166.30 : 121,749.45 = 61,483.30 : x
  2. Step 2: Convert to fraction form
    81,166.30/121,749.45 = 61,483.30/x
  3. Step 3: Cross multiply
    81,166.30x = 121,749.45 × 61,483.30
  4. Step 4: Simplify right side
    81,166.30x = 7,485,557,959.19
  5. Step 5: Solve for x
    x = 7,485,557,959.19/81,166.30
  6. Step 6: Final answer
    x = 92,224.95

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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.