Home / 156,621.46-216,139.23-85,002.10

Finding the Fourth Proportional to 156,621.46, 216,139.23 and 85,002.10

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Solution

The fourth proportional to 156,621.46, 216,139.23 and 85,002.10 is: 117,303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,621.46 : 216,139.23 = 85,002.10 : x
  2. Step 2: Convert to fraction form
    156,621.46/216,139.23 = 85,002.10/x
  3. Step 3: Cross multiply
    156,621.46x = 216,139.23 × 85,002.10
  4. Step 4: Simplify right side
    156,621.46x = 18,372,288,442.38
  5. Step 5: Solve for x
    x = 18,372,288,442.38/156,621.46
  6. Step 6: Final answer
    x = 117,303.77

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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.