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Finding the Fourth Proportional to 146,639, 202,359.66 and 86,216.44

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Solution

The fourth proportional to 146,639, 202,359.66 and 86,216.44 is: 118,977.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,639 : 202,359.66 = 86,216.44 : x
  2. Step 2: Convert to fraction form
    146,639/202,359.66 = 86,216.44/x
  3. Step 3: Cross multiply
    146,639x = 202,359.66 × 86,216.44
  4. Step 4: Simplify right side
    146,639x = 17,446,729,484.81
  5. Step 5: Solve for x
    x = 17,446,729,484.81/146,639
  6. Step 6: Final answer
    x = 118,977.42

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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.