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Finding the Fourth Proportional to 103,080.90, 144,429.90 and 103,080.90

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Solution

The fourth proportional to 103,080.90, 144,429.90 and 103,080.90 is: 144,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,080.90 : 144,429.90 = 103,080.90 : x
  2. Step 2: Convert to fraction form
    103,080.90/144,429.90 = 103,080.90/x
  3. Step 3: Cross multiply
    103,080.90x = 144,429.90 × 103,080.90
  4. Step 4: Simplify right side
    103,080.90x = 14,887,964,078.91
  5. Step 5: Solve for x
    x = 14,887,964,078.91/103,080.90
  6. Step 6: Final answer
    x = 144,429.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.