Home / 142,170.24-196,189.44-78,506.88

Finding the Fourth Proportional to 142,170.24, 196,189.44 and 78,506.88

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Solution

The fourth proportional to 142,170.24, 196,189.44 and 78,506.88 is: 108,336.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,170.24 : 196,189.44 = 78,506.88 : x
  2. Step 2: Convert to fraction form
    142,170.24/196,189.44 = 78,506.88/x
  3. Step 3: Cross multiply
    142,170.24x = 196,189.44 × 78,506.88
  4. Step 4: Simplify right side
    142,170.24x = 15,402,220,823.35
  5. Step 5: Solve for x
    x = 15,402,220,823.35/142,170.24
  6. Step 6: Final answer
    x = 108,336.46

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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.