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Finding the Fourth Proportional to 113,751.36, 156,985.68 and 62,774.21

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Solution

The fourth proportional to 113,751.36, 156,985.68 and 62,774.21 is: 86,633.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,751.36 : 156,985.68 = 62,774.21 : x
  2. Step 2: Convert to fraction form
    113,751.36/156,985.68 = 62,774.21/x
  3. Step 3: Cross multiply
    113,751.36x = 156,985.68 × 62,774.21
  4. Step 4: Simplify right side
    113,751.36x = 9,854,651,258.38
  5. Step 5: Solve for x
    x = 9,854,651,258.38/113,751.36
  6. Step 6: Final answer
    x = 86,633.26

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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.