Home / 143,226.03-197,640.14-78,692.00

Finding the Fourth Proportional to 143,226.03, 197,640.14 and 78,692.00

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Solution

The fourth proportional to 143,226.03, 197,640.14 and 78,692.00 is: 108,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,226.03 : 197,640.14 = 78,692.00 : x
  2. Step 2: Convert to fraction form
    143,226.03/197,640.14 = 78,692.00/x
  3. Step 3: Cross multiply
    143,226.03x = 197,640.14 × 78,692.00
  4. Step 4: Simplify right side
    143,226.03x = 15,552,696,515.22
  5. Step 5: Solve for x
    x = 15,552,696,515.22/143,226.03
  6. Step 6: Final answer
    x = 108,588.47

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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.