Home / 127,339.57-175,680.93-78,919.39

Finding the Fourth Proportional to 127,339.57, 175,680.93 and 78,919.39

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Solution

The fourth proportional to 127,339.57, 175,680.93 and 78,919.39 is: 108,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,339.57 : 175,680.93 = 78,919.39 : x
  2. Step 2: Convert to fraction form
    127,339.57/175,680.93 = 78,919.39/x
  3. Step 3: Cross multiply
    127,339.57x = 175,680.93 × 78,919.39
  4. Step 4: Simplify right side
    127,339.57x = 13,864,631,830.23
  5. Step 5: Solve for x
    x = 13,864,631,830.23/127,339.57
  6. Step 6: Final answer
    x = 108,879.21

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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.