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Finding the Fourth Proportional to 149,359.20, 224,038.80 and 137,954.40

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Solution

The fourth proportional to 149,359.20, 224,038.80 and 137,954.40 is: 206,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,359.20 : 224,038.80 = 137,954.40 : x
  2. Step 2: Convert to fraction form
    149,359.20/224,038.80 = 137,954.40/x
  3. Step 3: Cross multiply
    149,359.20x = 224,038.80 × 137,954.40
  4. Step 4: Simplify right side
    149,359.20x = 30,907,138,230.72
  5. Step 5: Solve for x
    x = 30,907,138,230.72/149,359.20
  6. Step 6: Final answer
    x = 206,931.60

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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.