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Finding the Fourth Proportional to 100,907.40, 151,361.10 and 67,729.80

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Solution

The fourth proportional to 100,907.40, 151,361.10 and 67,729.80 is: 101,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,907.40 : 151,361.10 = 67,729.80 : x
  2. Step 2: Convert to fraction form
    100,907.40/151,361.10 = 67,729.80/x
  3. Step 3: Cross multiply
    100,907.40x = 151,361.10 × 67,729.80
  4. Step 4: Simplify right side
    100,907.40x = 10,251,657,030.78
  5. Step 5: Solve for x
    x = 10,251,657,030.78/100,907.40
  6. Step 6: Final answer
    x = 101,594.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.