Home / 108,243.53-149,279.01-90,154.30

Finding the Fourth Proportional to 108,243.53, 149,279.01 and 90,154.30

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Solution

The fourth proportional to 108,243.53, 149,279.01 and 90,154.30 is: 124,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,243.53 : 149,279.01 = 90,154.30 : x
  2. Step 2: Convert to fraction form
    108,243.53/149,279.01 = 90,154.30/x
  3. Step 3: Cross multiply
    108,243.53x = 149,279.01 × 90,154.30
  4. Step 4: Simplify right side
    108,243.53x = 13,458,144,651.24
  5. Step 5: Solve for x
    x = 13,458,144,651.24/108,243.53
  6. Step 6: Final answer
    x = 124,332.09

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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.