Home / 131,405.60-197,108.40-84,166.40

Finding the Fourth Proportional to 131,405.60, 197,108.40 and 84,166.40

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Solution

The fourth proportional to 131,405.60, 197,108.40 and 84,166.40 is: 126,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,405.60 : 197,108.40 = 84,166.40 : x
  2. Step 2: Convert to fraction form
    131,405.60/197,108.40 = 84,166.40/x
  3. Step 3: Cross multiply
    131,405.60x = 197,108.40 × 84,166.40
  4. Step 4: Simplify right side
    131,405.60x = 16,589,904,437.76
  5. Step 5: Solve for x
    x = 16,589,904,437.76/131,405.60
  6. Step 6: Final answer
    x = 126,249.60

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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.