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Finding the Fourth Proportional to 113,111, 156,099.66 and 62,813.24

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Solution

The fourth proportional to 113,111, 156,099.66 and 62,813.24 is: 86,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,111 : 156,099.66 = 62,813.24 : x
  2. Step 2: Convert to fraction form
    113,111/156,099.66 = 62,813.24/x
  3. Step 3: Cross multiply
    113,111x = 156,099.66 × 62,813.24
  4. Step 4: Simplify right side
    113,111x = 9,805,125,407.50
  5. Step 5: Solve for x
    x = 9,805,125,407.50/113,111
  6. Step 6: Final answer
    x = 86,685.87

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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.