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Finding the Fourth Proportional to 143,574.51, 215,392.53 and 43,742.75

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Solution

The fourth proportional to 143,574.51, 215,392.53 and 43,742.75 is: 65,623.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,574.51 : 215,392.53 = 43,742.75 : x
  2. Step 2: Convert to fraction form
    143,574.51/215,392.53 = 43,742.75/x
  3. Step 3: Cross multiply
    143,574.51x = 215,392.53 × 43,742.75
  4. Step 4: Simplify right side
    143,574.51x = 9,421,861,591.66
  5. Step 5: Solve for x
    x = 9,421,861,591.66/143,574.51
  6. Step 6: Final answer
    x = 65,623.50

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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.