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Finding the Fourth Proportional to 143,647.60, 215,471.40 and 93,881.20

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Solution

The fourth proportional to 143,647.60, 215,471.40 and 93,881.20 is: 140,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,647.60 : 215,471.40 = 93,881.20 : x
  2. Step 2: Convert to fraction form
    143,647.60/215,471.40 = 93,881.20/x
  3. Step 3: Cross multiply
    143,647.60x = 215,471.40 × 93,881.20
  4. Step 4: Simplify right side
    143,647.60x = 20,228,713,597.68
  5. Step 5: Solve for x
    x = 20,228,713,597.68/143,647.60
  6. Step 6: Final answer
    x = 140,821.80

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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.