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Finding the Fourth Proportional to 117,359.55, 161,955.86 and 63,644.40

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Solution

The fourth proportional to 117,359.55, 161,955.86 and 63,644.40 is: 87,829.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,359.55 : 161,955.86 = 63,644.40 : x
  2. Step 2: Convert to fraction form
    117,359.55/161,955.86 = 63,644.40/x
  3. Step 3: Cross multiply
    117,359.55x = 161,955.86 × 63,644.40
  4. Step 4: Simplify right side
    117,359.55x = 10,307,583,217.96
  5. Step 5: Solve for x
    x = 10,307,583,217.96/117,359.55
  6. Step 6: Final answer
    x = 87,829.10

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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.