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Finding the Fourth Proportional to 143,157.68, 214,681.79 and 47,072.51

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Solution

The fourth proportional to 143,157.68, 214,681.79 and 47,072.51 is: 70,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,157.68 : 214,681.79 = 47,072.51 : x
  2. Step 2: Convert to fraction form
    143,157.68/214,681.79 = 47,072.51/x
  3. Step 3: Cross multiply
    143,157.68x = 214,681.79 × 47,072.51
  4. Step 4: Simplify right side
    143,157.68x = 10,105,609,397.82
  5. Step 5: Solve for x
    x = 10,105,609,397.82/143,157.68
  6. Step 6: Final answer
    x = 70,590.76

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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.