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Finding the Fourth Proportional to 143,886, 215,848.70 and 49,090.73

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Solution

The fourth proportional to 143,886, 215,848.70 and 49,090.73 is: 73,642.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,886 : 215,848.70 = 49,090.73 : x
  2. Step 2: Convert to fraction form
    143,886/215,848.70 = 49,090.73/x
  3. Step 3: Cross multiply
    143,886x = 215,848.70 × 49,090.73
  4. Step 4: Simplify right side
    143,886x = 10,596,170,252.55
  5. Step 5: Solve for x
    x = 10,596,170,252.55/143,886
  6. Step 6: Final answer
    x = 73,642.82

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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.