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Finding the Fourth Proportional to 113,515.13, 156,655.74 and 63,214.13

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Solution

The fourth proportional to 113,515.13, 156,655.74 and 63,214.13 is: 87,238.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,515.13 : 156,655.74 = 63,214.13 : x
  2. Step 2: Convert to fraction form
    113,515.13/156,655.74 = 63,214.13/x
  3. Step 3: Cross multiply
    113,515.13x = 156,655.74 × 63,214.13
  4. Step 4: Simplify right side
    113,515.13x = 9,902,856,313.61
  5. Step 5: Solve for x
    x = 9,902,856,313.61/113,515.13
  6. Step 6: Final answer
    x = 87,238.21

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