Home / 161,750.38-223,212.48-90,128.86

Finding the Fourth Proportional to 161,750.38, 223,212.48 and 90,128.86

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Solution

The fourth proportional to 161,750.38, 223,212.48 and 90,128.86 is: 124,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,750.38 : 223,212.48 = 90,128.86 : x
  2. Step 2: Convert to fraction form
    161,750.38/223,212.48 = 90,128.86/x
  3. Step 3: Cross multiply
    161,750.38x = 223,212.48 × 90,128.86
  4. Step 4: Simplify right side
    161,750.38x = 20,117,886,360.17
  5. Step 5: Solve for x
    x = 20,117,886,360.17/161,750.38
  6. Step 6: Final answer
    x = 124,376.13

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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.