Home / 161,749.37-223,211.11-90,127.86

Finding the Fourth Proportional to 161,749.37, 223,211.11 and 90,127.86

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Solution

The fourth proportional to 161,749.37, 223,211.11 and 90,127.86 is: 124,374.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,749.37 : 223,211.11 = 90,127.86 : x
  2. Step 2: Convert to fraction form
    161,749.37/223,211.11 = 90,127.86/x
  3. Step 3: Cross multiply
    161,749.37x = 223,211.11 × 90,127.86
  4. Step 4: Simplify right side
    161,749.37x = 20,117,539,672.52
  5. Step 5: Solve for x
    x = 20,117,539,672.52/161,749.37
  6. Step 6: Final answer
    x = 124,374.76

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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.