Home / 142,363.68-196,444.62-78,692.64

Finding the Fourth Proportional to 142,363.68, 196,444.62 and 78,692.64

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Solution

The fourth proportional to 142,363.68, 196,444.62 and 78,692.64 is: 108,586.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,363.68 : 196,444.62 = 78,692.64 : x
  2. Step 2: Convert to fraction form
    142,363.68/196,444.62 = 78,692.64/x
  3. Step 3: Cross multiply
    142,363.68x = 196,444.62 × 78,692.64
  4. Step 4: Simplify right side
    142,363.68x = 15,458,745,761.60
  5. Step 5: Solve for x
    x = 15,458,745,761.60/142,363.68
  6. Step 6: Final answer
    x = 108,586.30

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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.