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Finding the Fourth Proportional to 105,394.64, 145,448.64 and 60,079.76

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Solution

The fourth proportional to 105,394.64, 145,448.64 and 60,079.76 is: 82,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,394.64 : 145,448.64 = 60,079.76 : x
  2. Step 2: Convert to fraction form
    105,394.64/145,448.64 = 60,079.76/x
  3. Step 3: Cross multiply
    105,394.64x = 145,448.64 × 60,079.76
  4. Step 4: Simplify right side
    105,394.64x = 8,738,519,383.53
  5. Step 5: Solve for x
    x = 8,738,519,383.53/105,394.64
  6. Step 6: Final answer
    x = 82,912.37

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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.