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Finding the Fourth Proportional to 149,712.30, 224,568.45 and 70,980.30

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Solution

The fourth proportional to 149,712.30, 224,568.45 and 70,980.30 is: 106,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,712.30 : 224,568.45 = 70,980.30 : x
  2. Step 2: Convert to fraction form
    149,712.30/224,568.45 = 70,980.30/x
  3. Step 3: Cross multiply
    149,712.30x = 224,568.45 × 70,980.30
  4. Step 4: Simplify right side
    149,712.30x = 15,939,935,951.54
  5. Step 5: Solve for x
    x = 15,939,935,951.54/149,712.30
  6. Step 6: Final answer
    x = 106,470.45

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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.