Home / 143,356.03-197,836.39-78,830.18

Finding the Fourth Proportional to 143,356.03, 197,836.39 and 78,830.18

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Solution

The fourth proportional to 143,356.03, 197,836.39 and 78,830.18 is: 108,788.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,356.03 : 197,836.39 = 78,830.18 : x
  2. Step 2: Convert to fraction form
    143,356.03/197,836.39 = 78,830.18/x
  3. Step 3: Cross multiply
    143,356.03x = 197,836.39 × 78,830.18
  4. Step 4: Simplify right side
    143,356.03x = 15,595,478,085.49
  5. Step 5: Solve for x
    x = 15,595,478,085.49/143,356.03
  6. Step 6: Final answer
    x = 108,788.44

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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.