Home / 101,971.03-140,742.52-56,664.59

Finding the Fourth Proportional to 101,971.03, 140,742.52 and 56,664.59

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Solution

The fourth proportional to 101,971.03, 140,742.52 and 56,664.59 is: 78,209.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,971.03 : 140,742.52 = 56,664.59 : x
  2. Step 2: Convert to fraction form
    101,971.03/140,742.52 = 56,664.59/x
  3. Step 3: Cross multiply
    101,971.03x = 140,742.52 × 56,664.59
  4. Step 4: Simplify right side
    101,971.03x = 7,975,117,140.25
  5. Step 5: Solve for x
    x = 7,975,117,140.25/101,971.03
  6. Step 6: Final answer
    x = 78,209.64

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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.