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Finding the Fourth Proportional to 113,486, 156,611.76 and 63,186.08

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Solution

The fourth proportional to 113,486, 156,611.76 and 63,186.08 is: 87,197.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486 : 156,611.76 = 63,186.08 : x
  2. Step 2: Convert to fraction form
    113,486/156,611.76 = 63,186.08/x
  3. Step 3: Cross multiply
    113,486x = 156,611.76 × 63,186.08
  4. Step 4: Simplify right side
    113,486x = 9,895,683,196.30
  5. Step 5: Solve for x
    x = 9,895,683,196.30/113,486
  6. Step 6: Final answer
    x = 87,197.39

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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.