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Finding the Fourth Proportional to 156,291.56, 215,681.49 and 84,672.98

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Solution

The fourth proportional to 156,291.56, 215,681.49 and 84,672.98 is: 116,848.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,291.56 : 215,681.49 = 84,672.98 : x
  2. Step 2: Convert to fraction form
    156,291.56/215,681.49 = 84,672.98/x
  3. Step 3: Cross multiply
    156,291.56x = 215,681.49 × 84,672.98
  4. Step 4: Simplify right side
    156,291.56x = 18,262,394,489.14
  5. Step 5: Solve for x
    x = 18,262,394,489.14/156,291.56
  6. Step 6: Final answer
    x = 116,848.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.