Home / 156,685.39-216,224.67-85,063.57

Finding the Fourth Proportional to 156,685.39, 216,224.67 and 85,063.57

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Solution

The fourth proportional to 156,685.39, 216,224.67 and 85,063.57 is: 117,387.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,685.39 : 216,224.67 = 85,063.57 : x
  2. Step 2: Convert to fraction form
    156,685.39/216,224.67 = 85,063.57/x
  3. Step 3: Cross multiply
    156,685.39x = 216,224.67 × 85,063.57
  4. Step 4: Simplify right side
    156,685.39x = 18,392,842,130.70
  5. Step 5: Solve for x
    x = 18,392,842,130.70/156,685.39
  6. Step 6: Final answer
    x = 117,387.09

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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.