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Finding the Fourth Proportional to 143,574.44, 215,372.59 and 43,743.15

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Solution

The fourth proportional to 143,574.44, 215,372.59 and 43,743.15 is: 65,618.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,574.44 : 215,372.59 = 43,743.15 : x
  2. Step 2: Convert to fraction form
    143,574.44/215,372.59 = 43,743.15/x
  3. Step 3: Cross multiply
    143,574.44x = 215,372.59 × 43,743.15
  4. Step 4: Simplify right side
    143,574.44x = 9,421,075,400.90
  5. Step 5: Solve for x
    x = 9,421,075,400.90/143,574.44
  6. Step 6: Final answer
    x = 65,618.06

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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.