Home / 161,748.18-223,219.36-90,128.26

Finding the Fourth Proportional to 161,748.18, 223,219.36 and 90,128.26

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Solution

The fourth proportional to 161,748.18, 223,219.36 and 90,128.26 is: 124,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,748.18 : 223,219.36 = 90,128.26 : x
  2. Step 2: Convert to fraction form
    161,748.18/223,219.36 = 90,128.26/x
  3. Step 3: Cross multiply
    161,748.18x = 223,219.36 × 90,128.26
  4. Step 4: Simplify right side
    161,748.18x = 20,118,372,515.11
  5. Step 5: Solve for x
    x = 20,118,372,515.11/161,748.18
  6. Step 6: Final answer
    x = 124,380.83

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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.