Home / 156,628.10-216,146.99-85,008.12

Finding the Fourth Proportional to 156,628.10, 216,146.99 and 85,008.12

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Solution

The fourth proportional to 156,628.10, 216,146.99 and 85,008.12 is: 117,311.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,628.10 : 216,146.99 = 85,008.12 : x
  2. Step 2: Convert to fraction form
    156,628.10/216,146.99 = 85,008.12/x
  3. Step 3: Cross multiply
    156,628.10x = 216,146.99 × 85,008.12
  4. Step 4: Simplify right side
    156,628.10x = 18,374,248,838.52
  5. Step 5: Solve for x
    x = 18,374,248,838.52/156,628.10
  6. Step 6: Final answer
    x = 117,311.32

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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.