Home / 142,364.72-196,448.28-78,692.24

Finding the Fourth Proportional to 142,364.72, 196,448.28 and 78,692.24

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Solution

The fourth proportional to 142,364.72, 196,448.28 and 78,692.24 is: 108,586.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,364.72 : 196,448.28 = 78,692.24 : x
  2. Step 2: Convert to fraction form
    142,364.72/196,448.28 = 78,692.24/x
  3. Step 3: Cross multiply
    142,364.72x = 196,448.28 × 78,692.24
  4. Step 4: Simplify right side
    142,364.72x = 15,458,955,197.35
  5. Step 5: Solve for x
    x = 15,458,955,197.35/142,364.72
  6. Step 6: Final answer
    x = 108,586.98

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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.