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Finding the Fourth Proportional to 105,083.76, 145,015.60 and 67,358.10

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Solution

The fourth proportional to 105,083.76, 145,015.60 and 67,358.10 is: 92,954.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,083.76 : 145,015.60 = 67,358.10 : x
  2. Step 2: Convert to fraction form
    105,083.76/145,015.60 = 67,358.10/x
  3. Step 3: Cross multiply
    105,083.76x = 145,015.60 × 67,358.10
  4. Step 4: Simplify right side
    105,083.76x = 9,767,975,286.36
  5. Step 5: Solve for x
    x = 9,767,975,286.36/105,083.76
  6. Step 6: Final answer
    x = 92,954.19

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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.