Home / 156,968.15-216,610.12-85,345.70

Finding the Fourth Proportional to 156,968.15, 216,610.12 and 85,345.70

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Solution

The fourth proportional to 156,968.15, 216,610.12 and 85,345.70 is: 117,773.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,968.15 : 216,610.12 = 85,345.70 : x
  2. Step 2: Convert to fraction form
    156,968.15/216,610.12 = 85,345.70/x
  3. Step 3: Cross multiply
    156,968.15x = 216,610.12 × 85,345.70
  4. Step 4: Simplify right side
    156,968.15x = 18,486,742,318.48
  5. Step 5: Solve for x
    x = 18,486,742,318.48/156,968.15
  6. Step 6: Final answer
    x = 117,773.84

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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.