Home / 156,954.80-235,432.20-78,222.80

Finding the Fourth Proportional to 156,954.80, 235,432.20 and 78,222.80

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Solution

The fourth proportional to 156,954.80, 235,432.20 and 78,222.80 is: 117,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,954.80 : 235,432.20 = 78,222.80 : x
  2. Step 2: Convert to fraction form
    156,954.80/235,432.20 = 78,222.80/x
  3. Step 3: Cross multiply
    156,954.80x = 235,432.20 × 78,222.80
  4. Step 4: Simplify right side
    156,954.80x = 18,416,165,894.16
  5. Step 5: Solve for x
    x = 18,416,165,894.16/156,954.80
  6. Step 6: Final answer
    x = 117,334.20

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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.