Home / 108,983.26-163,216.54-69,420.43

Finding the Fourth Proportional to 108,983.26, 163,216.54 and 69,420.43

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Solution

The fourth proportional to 108,983.26, 163,216.54 and 69,420.43 is: 103,966.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,983.26 : 163,216.54 = 69,420.43 : x
  2. Step 2: Convert to fraction form
    108,983.26/163,216.54 = 69,420.43/x
  3. Step 3: Cross multiply
    108,983.26x = 163,216.54 × 69,420.43
  4. Step 4: Simplify right side
    108,983.26x = 11,330,562,389.91
  5. Step 5: Solve for x
    x = 11,330,562,389.91/108,983.26
  6. Step 6: Final answer
    x = 103,966.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.