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Finding the Fourth Proportional to 101,358.34, 139,878.39 and 67,307.96

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Solution

The fourth proportional to 101,358.34, 139,878.39 and 67,307.96 is: 92,887.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,358.34 : 139,878.39 = 67,307.96 : x
  2. Step 2: Convert to fraction form
    101,358.34/139,878.39 = 67,307.96/x
  3. Step 3: Cross multiply
    101,358.34x = 139,878.39 × 67,307.96
  4. Step 4: Simplify right side
    101,358.34x = 9,414,929,681.09
  5. Step 5: Solve for x
    x = 9,414,929,681.09/101,358.34
  6. Step 6: Final answer
    x = 92,887.57

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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.