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Finding the Fourth Proportional to 163,449, 225,562.58 and 90,858.68

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Solution

The fourth proportional to 163,449, 225,562.58 and 90,858.68 is: 125,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,449 : 225,562.58 = 90,858.68 : x
  2. Step 2: Convert to fraction form
    163,449/225,562.58 = 90,858.68/x
  3. Step 3: Cross multiply
    163,449x = 225,562.58 × 90,858.68
  4. Step 4: Simplify right side
    163,449x = 20,494,318,276.19
  5. Step 5: Solve for x
    x = 20,494,318,276.19/163,449
  6. Step 6: Final answer
    x = 125,386.62

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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.