Home / 131,657.60-197,227.20-78,910.40

Finding the Fourth Proportional to 131,657.60, 197,227.20 and 78,910.40

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Solution

The fourth proportional to 131,657.60, 197,227.20 and 78,910.40 is: 118,210.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,657.60 : 197,227.20 = 78,910.40 : x
  2. Step 2: Convert to fraction form
    131,657.60/197,227.20 = 78,910.40/x
  3. Step 3: Cross multiply
    131,657.60x = 197,227.20 × 78,910.40
  4. Step 4: Simplify right side
    131,657.60x = 15,563,277,242.88
  5. Step 5: Solve for x
    x = 15,563,277,242.88/131,657.60
  6. Step 6: Final answer
    x = 118,210.25

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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.