Home / 138,022.66-190,466.35-76,768.53

Finding the Fourth Proportional to 138,022.66, 190,466.35 and 76,768.53

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Solution

The fourth proportional to 138,022.66, 190,466.35 and 76,768.53 is: 105,937.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,022.66 : 190,466.35 = 76,768.53 : x
  2. Step 2: Convert to fraction form
    138,022.66/190,466.35 = 76,768.53/x
  3. Step 3: Cross multiply
    138,022.66x = 190,466.35 × 76,768.53
  4. Step 4: Simplify right side
    138,022.66x = 14,621,821,703.97
  5. Step 5: Solve for x
    x = 14,621,821,703.97/138,022.66
  6. Step 6: Final answer
    x = 105,937.83

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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.