Home / 156,781.30-216,362.20-85,165.42

Finding the Fourth Proportional to 156,781.30, 216,362.20 and 85,165.42

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Solution

The fourth proportional to 156,781.30, 216,362.20 and 85,165.42 is: 117,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,781.30 : 216,362.20 = 85,165.42 : x
  2. Step 2: Convert to fraction form
    156,781.30/216,362.20 = 85,165.42/x
  3. Step 3: Cross multiply
    156,781.30x = 216,362.20 × 85,165.42
  4. Step 4: Simplify right side
    156,781.30x = 18,426,577,635.12
  5. Step 5: Solve for x
    x = 18,426,577,635.12/156,781.30
  6. Step 6: Final answer
    x = 117,530.46

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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.