Home / 161,745.38-223,205.61-90,123.86

Finding the Fourth Proportional to 161,745.38, 223,205.61 and 90,123.86

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Solution

The fourth proportional to 161,745.38, 223,205.61 and 90,123.86 is: 124,369.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,745.38 : 223,205.61 = 90,123.86 : x
  2. Step 2: Convert to fraction form
    161,745.38/223,205.61 = 90,123.86/x
  3. Step 3: Cross multiply
    161,745.38x = 223,205.61 × 90,123.86
  4. Step 4: Simplify right side
    161,745.38x = 20,116,151,146.85
  5. Step 5: Solve for x
    x = 20,116,151,146.85/161,745.38
  6. Step 6: Final answer
    x = 124,369.25

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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.