Home / 161,749.18-223,220.74-90,129.26

Finding the Fourth Proportional to 161,749.18, 223,220.74 and 90,129.26

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Solution

The fourth proportional to 161,749.18, 223,220.74 and 90,129.26 is: 124,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,749.18 : 223,220.74 = 90,129.26 : x
  2. Step 2: Convert to fraction form
    161,749.18/223,220.74 = 90,129.26/x
  3. Step 3: Cross multiply
    161,749.18x = 223,220.74 × 90,129.26
  4. Step 4: Simplify right side
    161,749.18x = 20,118,720,112.85
  5. Step 5: Solve for x
    x = 20,118,720,112.85/161,749.18
  6. Step 6: Final answer
    x = 124,382.21

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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.