Home / 129,682.58-178,962-70,066.58

Finding the Fourth Proportional to 129,682.58, 178,962 and 70,066.58

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Solution

The fourth proportional to 129,682.58, 178,962 and 70,066.58 is: 96,691.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,682.58 : 178,962 = 70,066.58 : x
  2. Step 2: Convert to fraction form
    129,682.58/178,962 = 70,066.58/x
  3. Step 3: Cross multiply
    129,682.58x = 178,962 × 70,066.58
  4. Step 4: Simplify right side
    129,682.58x = 12,539,255,289.96
  5. Step 5: Solve for x
    x = 12,539,255,289.96/129,682.58
  6. Step 6: Final answer
    x = 96,691.90

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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.