Home / 156,745.48-216,306.90-85,126.60

Finding the Fourth Proportional to 156,745.48, 216,306.90 and 85,126.60

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Solution

The fourth proportional to 156,745.48, 216,306.90 and 85,126.60 is: 117,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,745.48 : 216,306.90 = 85,126.60 : x
  2. Step 2: Convert to fraction form
    156,745.48/216,306.90 = 85,126.60/x
  3. Step 3: Cross multiply
    156,745.48x = 216,306.90 × 85,126.60
  4. Step 4: Simplify right side
    156,745.48x = 18,413,470,953.54
  5. Step 5: Solve for x
    x = 18,413,470,953.54/156,745.48
  6. Step 6: Final answer
    x = 117,473.70

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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.