Home / 156,685.20-216,225.72-85,065.18

Finding the Fourth Proportional to 156,685.20, 216,225.72 and 85,065.18

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Solution

The fourth proportional to 156,685.20, 216,225.72 and 85,065.18 is: 117,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,685.20 : 216,225.72 = 85,065.18 : x
  2. Step 2: Convert to fraction form
    156,685.20/216,225.72 = 85,065.18/x
  3. Step 3: Cross multiply
    156,685.20x = 216,225.72 × 85,065.18
  4. Step 4: Simplify right side
    156,685.20x = 18,393,279,792.43
  5. Step 5: Solve for x
    x = 18,393,279,792.43/156,685.20
  6. Step 6: Final answer
    x = 117,390.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.