Home / 78,370.06-117,555.09-19,205.22

Finding the Fourth Proportional to 78,370.06, 117,555.09 and 19,205.22

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Solution

The fourth proportional to 78,370.06, 117,555.09 and 19,205.22 is: 28,807.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,370.06 : 117,555.09 = 19,205.22 : x
  2. Step 2: Convert to fraction form
    78,370.06/117,555.09 = 19,205.22/x
  3. Step 3: Cross multiply
    78,370.06x = 117,555.09 × 19,205.22
  4. Step 4: Simplify right side
    78,370.06x = 2,257,671,365.57
  5. Step 5: Solve for x
    x = 2,257,671,365.57/78,370.06
  6. Step 6: Final answer
    x = 28,807.83

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1.5x scale

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.