Home / 79,198.09-118,501.87-78,312.35

Finding the Fourth Proportional to 79,198.09, 118,501.87 and 78,312.35

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Solution

The fourth proportional to 79,198.09, 118,501.87 and 78,312.35 is: 117,176.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.09 : 118,501.87 = 78,312.35 : x
  2. Step 2: Convert to fraction form
    79,198.09/118,501.87 = 78,312.35/x
  3. Step 3: Cross multiply
    79,198.09x = 118,501.87 × 78,312.35
  4. Step 4: Simplify right side
    79,198.09x = 9,280,159,527.53
  5. Step 5: Solve for x
    x = 9,280,159,527.53/79,198.09
  6. Step 6: Final answer
    x = 117,176.56

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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.