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Finding the Fourth Proportional to 108,495.63, 149,689.37 and 70,284.47

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Solution

The fourth proportional to 108,495.63, 149,689.37 and 70,284.47 is: 96,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,495.63 : 149,689.37 = 70,284.47 : x
  2. Step 2: Convert to fraction form
    108,495.63/149,689.37 = 70,284.47/x
  3. Step 3: Cross multiply
    108,495.63x = 149,689.37 × 70,284.47
  4. Step 4: Simplify right side
    108,495.63x = 10,520,837,286.64
  5. Step 5: Solve for x
    x = 10,520,837,286.64/108,495.63
  6. Step 6: Final answer
    x = 96,970.15

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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.