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Finding the Fourth Proportional to 105,281.70, 157,938.21 and 35,144.34

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Solution

The fourth proportional to 105,281.70, 157,938.21 and 35,144.34 is: 52,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,281.70 : 157,938.21 = 35,144.34 : x
  2. Step 2: Convert to fraction form
    105,281.70/157,938.21 = 35,144.34/x
  3. Step 3: Cross multiply
    105,281.70x = 157,938.21 × 35,144.34
  4. Step 4: Simplify right side
    105,281.70x = 5,550,634,151.23
  5. Step 5: Solve for x
    x = 5,550,634,151.23/105,281.70
  6. Step 6: Final answer
    x = 52,721.74

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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.