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Finding the Fourth Proportional to 108,901, 149,816.82 and 104,235.40

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Solution

The fourth proportional to 108,901, 149,816.82 and 104,235.40 is: 143,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,901 : 149,816.82 = 104,235.40 : x
  2. Step 2: Convert to fraction form
    108,901/149,816.82 = 104,235.40/x
  3. Step 3: Cross multiply
    108,901x = 149,816.82 × 104,235.40
  4. Step 4: Simplify right side
    108,901x = 15,616,216,159.43
  5. Step 5: Solve for x
    x = 15,616,216,159.43/108,901
  6. Step 6: Final answer
    x = 143,398.28

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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.