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Finding the Fourth Proportional to 117,288.61, 161,858.57 and 63,573.57

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Solution

The fourth proportional to 117,288.61, 161,858.57 and 63,573.57 is: 87,731.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,288.61 : 161,858.57 = 63,573.57 : x
  2. Step 2: Convert to fraction form
    117,288.61/161,858.57 = 63,573.57/x
  3. Step 3: Cross multiply
    117,288.61x = 161,858.57 × 63,573.57
  4. Step 4: Simplify right side
    117,288.61x = 10,289,926,812.13
  5. Step 5: Solve for x
    x = 10,289,926,812.13/117,288.61
  6. Step 6: Final answer
    x = 87,731.68

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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.