Home / 161,749.38-223,211.10-90,127.86

Finding the Fourth Proportional to 161,749.38, 223,211.10 and 90,127.86

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Solution

The fourth proportional to 161,749.38, 223,211.10 and 90,127.86 is: 124,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,749.38 : 223,211.10 = 90,127.86 : x
  2. Step 2: Convert to fraction form
    161,749.38/223,211.10 = 90,127.86/x
  3. Step 3: Cross multiply
    161,749.38x = 223,211.10 × 90,127.86
  4. Step 4: Simplify right side
    161,749.38x = 20,117,538,771.25
  5. Step 5: Solve for x
    x = 20,117,538,771.25/161,749.38
  6. Step 6: Final answer
    x = 124,374.75

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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.