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Finding the Fourth Proportional to 117,287.99, 161,856.85 and 63,572.84

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Solution

The fourth proportional to 117,287.99, 161,856.85 and 63,572.84 is: 87,730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,287.99 : 161,856.85 = 63,572.84 : x
  2. Step 2: Convert to fraction form
    117,287.99/161,856.85 = 63,572.84/x
  3. Step 3: Cross multiply
    117,287.99x = 161,856.85 × 63,572.84
  4. Step 4: Simplify right side
    117,287.99x = 10,289,699,627.95
  5. Step 5: Solve for x
    x = 10,289,699,627.95/117,287.99
  6. Step 6: Final answer
    x = 87,730.21

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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.