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Finding the Fourth Proportional to 101,770.34, 140,439.74 and 61,477.08

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Solution

The fourth proportional to 101,770.34, 140,439.74 and 61,477.08 is: 84,836.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,770.34 : 140,439.74 = 61,477.08 : x
  2. Step 2: Convert to fraction form
    101,770.34/140,439.74 = 61,477.08/x
  3. Step 3: Cross multiply
    101,770.34x = 140,439.74 × 61,477.08
  4. Step 4: Simplify right side
    101,770.34x = 8,633,825,661.33
  5. Step 5: Solve for x
    x = 8,633,825,661.33/101,770.34
  6. Step 6: Final answer
    x = 84,836.37

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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.