Home / 142,483.74-196,633.35-78,820.44

Finding the Fourth Proportional to 142,483.74, 196,633.35 and 78,820.44

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Solution

The fourth proportional to 142,483.74, 196,633.35 and 78,820.44 is: 108,775.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,483.74 : 196,633.35 = 78,820.44 : x
  2. Step 2: Convert to fraction form
    142,483.74/196,633.35 = 78,820.44/x
  3. Step 3: Cross multiply
    142,483.74x = 196,633.35 × 78,820.44
  4. Step 4: Simplify right side
    142,483.74x = 15,498,727,165.67
  5. Step 5: Solve for x
    x = 15,498,727,165.67/142,483.74
  6. Step 6: Final answer
    x = 108,775.41

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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.