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Finding the Fourth Proportional to 143,210.40, 197,627.40 and 79,546.80

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Solution

The fourth proportional to 143,210.40, 197,627.40 and 79,546.80 is: 109,772.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,210.40 : 197,627.40 = 79,546.80 : x
  2. Step 2: Convert to fraction form
    143,210.40/197,627.40 = 79,546.80/x
  3. Step 3: Cross multiply
    143,210.40x = 197,627.40 × 79,546.80
  4. Step 4: Simplify right side
    143,210.40x = 15,720,627,262.32
  5. Step 5: Solve for x
    x = 15,720,627,262.32/143,210.40
  6. Step 6: Final answer
    x = 109,772.94

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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.