Home / 79,205.09-118,512.37-78,319.35

Finding the Fourth Proportional to 79,205.09, 118,512.37 and 78,319.35

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Solution

The fourth proportional to 79,205.09, 118,512.37 and 78,319.35 is: 117,187.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,205.09 : 118,512.37 = 78,319.35 : x
  2. Step 2: Convert to fraction form
    79,205.09/118,512.37 = 78,319.35/x
  3. Step 3: Cross multiply
    79,205.09x = 118,512.37 × 78,319.35
  4. Step 4: Simplify right side
    79,205.09x = 9,281,811,393.76
  5. Step 5: Solve for x
    x = 9,281,811,393.76/79,205.09
  6. Step 6: Final answer
    x = 117,187.06

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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.