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Finding the Fourth Proportional to 113,708, 156,920.28 and 63,410.24

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Solution

The fourth proportional to 113,708, 156,920.28 and 63,410.24 is: 87,507.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,708 : 156,920.28 = 63,410.24 : x
  2. Step 2: Convert to fraction form
    113,708/156,920.28 = 63,410.24/x
  3. Step 3: Cross multiply
    113,708x = 156,920.28 × 63,410.24
  4. Step 4: Simplify right side
    113,708x = 9,950,352,615.67
  5. Step 5: Solve for x
    x = 9,950,352,615.67/113,708
  6. Step 6: Final answer
    x = 87,507.94

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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.