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Finding the Fourth Proportional to 156,082.65, 215,395.65 and 84,464.34

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Solution

The fourth proportional to 156,082.65, 215,395.65 and 84,464.34 is: 116,561.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,082.65 : 215,395.65 = 84,464.34 : x
  2. Step 2: Convert to fraction form
    156,082.65/215,395.65 = 84,464.34/x
  3. Step 3: Cross multiply
    156,082.65x = 215,395.65 × 84,464.34
  4. Step 4: Simplify right side
    156,082.65x = 18,193,251,416.12
  5. Step 5: Solve for x
    x = 18,193,251,416.12/156,082.65
  6. Step 6: Final answer
    x = 116,561.65

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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.