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Finding the Fourth Proportional to 143,830.80, 215,551.80 and 127,112.40

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Solution

The fourth proportional to 143,830.80, 215,551.80 and 127,112.40 is: 190,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,830.80 : 215,551.80 = 127,112.40 : x
  2. Step 2: Convert to fraction form
    143,830.80/215,551.80 = 127,112.40/x
  3. Step 3: Cross multiply
    143,830.80x = 215,551.80 × 127,112.40
  4. Step 4: Simplify right side
    143,830.80x = 27,399,306,622.32
  5. Step 5: Solve for x
    x = 27,399,306,622.32/143,830.80
  6. Step 6: Final answer
    x = 190,496.80

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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.