Home / 100,712.40-151,185.30-54,056.40

Finding the Fourth Proportional to 100,712.40, 151,185.30 and 54,056.40

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Solution

The fourth proportional to 100,712.40, 151,185.30 and 54,056.40 is: 81,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,712.40 : 151,185.30 = 54,056.40 : x
  2. Step 2: Convert to fraction form
    100,712.40/151,185.30 = 54,056.40/x
  3. Step 3: Cross multiply
    100,712.40x = 151,185.30 × 54,056.40
  4. Step 4: Simplify right side
    100,712.40x = 8,172,533,050.92
  5. Step 5: Solve for x
    x = 8,172,533,050.92/100,712.40
  6. Step 6: Final answer
    x = 81,147.24

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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.