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Finding the Fourth Proportional to 156,145.64, 215,480.90 and 84,526.24

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Solution

The fourth proportional to 156,145.64, 215,480.90 and 84,526.24 is: 116,646.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,145.64 : 215,480.90 = 84,526.24 : x
  2. Step 2: Convert to fraction form
    156,145.64/215,480.90 = 84,526.24/x
  3. Step 3: Cross multiply
    156,145.64x = 215,480.90 × 84,526.24
  4. Step 4: Simplify right side
    156,145.64x = 18,213,790,268.82
  5. Step 5: Solve for x
    x = 18,213,790,268.82/156,145.64
  6. Step 6: Final answer
    x = 116,646.17

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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.