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Finding the Fourth Proportional to 149,254.40, 224,054.40 and 90,156.80

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Solution

The fourth proportional to 149,254.40, 224,054.40 and 90,156.80 is: 135,339.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,254.40 : 224,054.40 = 90,156.80 : x
  2. Step 2: Convert to fraction form
    149,254.40/224,054.40 = 90,156.80/x
  3. Step 3: Cross multiply
    149,254.40x = 224,054.40 × 90,156.80
  4. Step 4: Simplify right side
    149,254.40x = 20,200,027,729.92
  5. Step 5: Solve for x
    x = 20,200,027,729.92/149,254.40
  6. Step 6: Final answer
    x = 135,339.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.