Home / 131,474.60-197,211.90-78,252.20

Finding the Fourth Proportional to 131,474.60, 197,211.90 and 78,252.20

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Solution

The fourth proportional to 131,474.60, 197,211.90 and 78,252.20 is: 117,378.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,474.60 : 197,211.90 = 78,252.20 : x
  2. Step 2: Convert to fraction form
    131,474.60/197,211.90 = 78,252.20/x
  3. Step 3: Cross multiply
    131,474.60x = 197,211.90 × 78,252.20
  4. Step 4: Simplify right side
    131,474.60x = 15,432,265,041.18
  5. Step 5: Solve for x
    x = 15,432,265,041.18/131,474.60
  6. Step 6: Final answer
    x = 117,378.30

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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.