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Finding the Fourth Proportional to 101,145.60, 151,426.80 and 67,903.20

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Solution

The fourth proportional to 101,145.60, 151,426.80 and 67,903.20 is: 101,659.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,145.60 : 151,426.80 = 67,903.20 : x
  2. Step 2: Convert to fraction form
    101,145.60/151,426.80 = 67,903.20/x
  3. Step 3: Cross multiply
    101,145.60x = 151,426.80 × 67,903.20
  4. Step 4: Simplify right side
    101,145.60x = 10,282,364,285.76
  5. Step 5: Solve for x
    x = 10,282,364,285.76/101,145.60
  6. Step 6: Final answer
    x = 101,659.04

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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.