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Finding the Fourth Proportional to 126,874.70, 190,312.05 and 63,670.40

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Solution

The fourth proportional to 126,874.70, 190,312.05 and 63,670.40 is: 95,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,874.70 : 190,312.05 = 63,670.40 : x
  2. Step 2: Convert to fraction form
    126,874.70/190,312.05 = 63,670.40/x
  3. Step 3: Cross multiply
    126,874.70x = 190,312.05 × 63,670.40
  4. Step 4: Simplify right side
    126,874.70x = 12,117,244,348.32
  5. Step 5: Solve for x
    x = 12,117,244,348.32/126,874.70
  6. Step 6: Final answer
    x = 95,505.60

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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.