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Finding the Fourth Proportional to 101,609.75, 140,221.44 and 56,290.68

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Solution

The fourth proportional to 101,609.75, 140,221.44 and 56,290.68 is: 77,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,609.75 : 140,221.44 = 56,290.68 : x
  2. Step 2: Convert to fraction form
    101,609.75/140,221.44 = 56,290.68/x
  3. Step 3: Cross multiply
    101,609.75x = 140,221.44 × 56,290.68
  4. Step 4: Simplify right side
    101,609.75x = 7,893,160,208.18
  5. Step 5: Solve for x
    x = 7,893,160,208.18/101,609.75
  6. Step 6: Final answer
    x = 77,681.13

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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.