Home / 131,442.60-196,710.30-78,889.80

Finding the Fourth Proportional to 131,442.60, 196,710.30 and 78,889.80

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Solution

The fourth proportional to 131,442.60, 196,710.30 and 78,889.80 is: 118,062.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,442.60 : 196,710.30 = 78,889.80 : x
  2. Step 2: Convert to fraction form
    131,442.60/196,710.30 = 78,889.80/x
  3. Step 3: Cross multiply
    131,442.60x = 196,710.30 × 78,889.80
  4. Step 4: Simplify right side
    131,442.60x = 15,518,436,224.94
  5. Step 5: Solve for x
    x = 15,518,436,224.94/131,442.60
  6. Step 6: Final answer
    x = 118,062.46

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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.