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Finding the Fourth Proportional to 137,783.56, 190,092.40 and 90,064.44

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Solution

The fourth proportional to 137,783.56, 190,092.40 and 90,064.44 is: 124,256.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,783.56 : 190,092.40 = 90,064.44 : x
  2. Step 2: Convert to fraction form
    137,783.56/190,092.40 = 90,064.44/x
  3. Step 3: Cross multiply
    137,783.56x = 190,092.40 × 90,064.44
  4. Step 4: Simplify right side
    137,783.56x = 17,120,565,554.26
  5. Step 5: Solve for x
    x = 17,120,565,554.26/137,783.56
  6. Step 6: Final answer
    x = 124,256.95

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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.