Home / 142,245.45-196,302.68-78,587.35

Finding the Fourth Proportional to 142,245.45, 196,302.68 and 78,587.35

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Solution

The fourth proportional to 142,245.45, 196,302.68 and 78,587.35 is: 108,452.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,245.45 : 196,302.68 = 78,587.35 : x
  2. Step 2: Convert to fraction form
    142,245.45/196,302.68 = 78,587.35/x
  3. Step 3: Cross multiply
    142,245.45x = 196,302.68 × 78,587.35
  4. Step 4: Simplify right side
    142,245.45x = 15,426,907,419.10
  5. Step 5: Solve for x
    x = 15,426,907,419.10/142,245.45
  6. Step 6: Final answer
    x = 108,452.73

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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.