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Finding the Fourth Proportional to 137,994.02, 190,447.61 and 76,746.42

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Solution

The fourth proportional to 137,994.02, 190,447.61 and 76,746.42 is: 105,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,994.02 : 190,447.61 = 76,746.42 : x
  2. Step 2: Convert to fraction form
    137,994.02/190,447.61 = 76,746.42/x
  3. Step 3: Cross multiply
    137,994.02x = 190,447.61 × 76,746.42
  4. Step 4: Simplify right side
    137,994.02x = 14,616,172,265.06
  5. Step 5: Solve for x
    x = 14,616,172,265.06/137,994.02
  6. Step 6: Final answer
    x = 105,918.89

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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.