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Finding the Fourth Proportional to 126,690.59, 190,090.98 and 79,414.01

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Solution

The fourth proportional to 126,690.59, 190,090.98 and 79,414.01 is: 119,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,690.59 : 190,090.98 = 79,414.01 : x
  2. Step 2: Convert to fraction form
    126,690.59/190,090.98 = 79,414.01/x
  3. Step 3: Cross multiply
    126,690.59x = 190,090.98 × 79,414.01
  4. Step 4: Simplify right side
    126,690.59x = 15,095,886,036.17
  5. Step 5: Solve for x
    x = 15,095,886,036.17/126,690.59
  6. Step 6: Final answer
    x = 119,155.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.