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Finding the Fourth Proportional to 143,812.14, 215,718.21 and 43,972.32

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Solution

The fourth proportional to 143,812.14, 215,718.21 and 43,972.32 is: 65,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,812.14 : 215,718.21 = 43,972.32 : x
  2. Step 2: Convert to fraction form
    143,812.14/215,718.21 = 43,972.32/x
  3. Step 3: Cross multiply
    143,812.14x = 215,718.21 × 43,972.32
  4. Step 4: Simplify right side
    143,812.14x = 9,485,630,159.95
  5. Step 5: Solve for x
    x = 9,485,630,159.95/143,812.14
  6. Step 6: Final answer
    x = 65,958.48

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Similar ratio
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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.