Home / 156,621.70-216,138.10-85,001.74

Finding the Fourth Proportional to 156,621.70, 216,138.10 and 85,001.74

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Solution

The fourth proportional to 156,621.70, 216,138.10 and 85,001.74 is: 117,302.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.70 : 216,138.10 = 85,001.74 : x
  2. Step 2: Convert to fraction form
    156,621.70/216,138.10 = 85,001.74/x
  3. Step 3: Cross multiply
    156,621.70x = 216,138.10 × 85,001.74
  4. Step 4: Simplify right side
    156,621.70x = 18,372,114,659.59
  5. Step 5: Solve for x
    x = 18,372,114,659.59/156,621.70
  6. Step 6: Final answer
    x = 117,302.48

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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.