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Finding the Fourth Proportional to 149,720.40, 224,580.60 and 90,671.40

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Solution

The fourth proportional to 149,720.40, 224,580.60 and 90,671.40 is: 136,007.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,720.40 : 224,580.60 = 90,671.40 : x
  2. Step 2: Convert to fraction form
    149,720.40/224,580.60 = 90,671.40/x
  3. Step 3: Cross multiply
    149,720.40x = 224,580.60 × 90,671.40
  4. Step 4: Simplify right side
    149,720.40x = 20,363,037,414.84
  5. Step 5: Solve for x
    x = 20,363,037,414.84/149,720.40
  6. Step 6: Final answer
    x = 136,007.10

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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.