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Finding the Fourth Proportional to 113,555.63, 156,672.08 and 65,799.75

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Solution

The fourth proportional to 113,555.63, 156,672.08 and 65,799.75 is: 90,783.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,555.63 : 156,672.08 = 65,799.75 : x
  2. Step 2: Convert to fraction form
    113,555.63/156,672.08 = 65,799.75/x
  3. Step 3: Cross multiply
    113,555.63x = 156,672.08 × 65,799.75
  4. Step 4: Simplify right side
    113,555.63x = 10,308,984,201.25
  5. Step 5: Solve for x
    x = 10,308,984,201.25/113,555.63
  6. Step 6: Final answer
    x = 90,783.56

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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.