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Finding the Fourth Proportional to 101,647.50, 140,273.56 and 61,903.50

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Solution

The fourth proportional to 101,647.50, 140,273.56 and 61,903.50 is: 85,426.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,647.50 : 140,273.56 = 61,903.50 : x
  2. Step 2: Convert to fraction form
    101,647.50/140,273.56 = 61,903.50/x
  3. Step 3: Cross multiply
    101,647.50x = 140,273.56 × 61,903.50
  4. Step 4: Simplify right side
    101,647.50x = 8,683,424,321.46
  5. Step 5: Solve for x
    x = 8,683,424,321.46/101,647.50
  6. Step 6: Final answer
    x = 85,426.84

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1.5x scale

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.