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Finding the Fourth Proportional to 106,683.79, 147,217.71 and 66,396.28

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Solution

The fourth proportional to 106,683.79, 147,217.71 and 66,396.28 is: 91,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,683.79 : 147,217.71 = 66,396.28 : x
  2. Step 2: Convert to fraction form
    106,683.79/147,217.71 = 66,396.28/x
  3. Step 3: Cross multiply
    106,683.79x = 147,217.71 × 66,396.28
  4. Step 4: Simplify right side
    106,683.79x = 9,774,708,175.06
  5. Step 5: Solve for x
    x = 9,774,708,175.06/106,683.79
  6. Step 6: Final answer
    x = 91,623.18

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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.