Home / 156,983.90-216,639.21-85,364.54

Finding the Fourth Proportional to 156,983.90, 216,639.21 and 85,364.54

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Solution

The fourth proportional to 156,983.90, 216,639.21 and 85,364.54 is: 117,803.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,983.90 : 216,639.21 = 85,364.54 : x
  2. Step 2: Convert to fraction form
    156,983.90/216,639.21 = 85,364.54/x
  3. Step 3: Cross multiply
    156,983.90x = 216,639.21 × 85,364.54
  4. Step 4: Simplify right side
    156,983.90x = 18,493,306,507.61
  5. Step 5: Solve for x
    x = 18,493,306,507.61/156,983.90
  6. Step 6: Final answer
    x = 117,803.84

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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.