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Finding the Fourth Proportional to 120,335.63, 166,056.84 and 65,877.35

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Solution

The fourth proportional to 120,335.63, 166,056.84 and 65,877.35 is: 90,907.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,335.63 : 166,056.84 = 65,877.35 : x
  2. Step 2: Convert to fraction form
    120,335.63/166,056.84 = 65,877.35/x
  3. Step 3: Cross multiply
    120,335.63x = 166,056.84 × 65,877.35
  4. Step 4: Simplify right side
    120,335.63x = 10,939,384,568.57
  5. Step 5: Solve for x
    x = 10,939,384,568.57/120,335.63
  6. Step 6: Final answer
    x = 90,907.28

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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.