Home / 117,285.52-161,856.50-66,295.20

Finding the Fourth Proportional to 117,285.52, 161,856.50 and 66,295.20

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Solution

The fourth proportional to 117,285.52, 161,856.50 and 66,295.20 is: 91,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,285.52 : 161,856.50 = 66,295.20 : x
  2. Step 2: Convert to fraction form
    117,285.52/161,856.50 = 66,295.20/x
  3. Step 3: Cross multiply
    117,285.52x = 161,856.50 × 66,295.20
  4. Step 4: Simplify right side
    117,285.52x = 10,730,309,038.80
  5. Step 5: Solve for x
    x = 10,730,309,038.80/117,285.52
  6. Step 6: Final answer
    x = 91,488.78

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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.