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Finding the Fourth Proportional to 163,368.70, 225,449.70 and 90,771.69

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Solution

The fourth proportional to 163,368.70, 225,449.70 and 90,771.69 is: 125,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,368.70 : 225,449.70 = 90,771.69 : x
  2. Step 2: Convert to fraction form
    163,368.70/225,449.70 = 90,771.69/x
  3. Step 3: Cross multiply
    163,368.70x = 225,449.70 × 90,771.69
  4. Step 4: Simplify right side
    163,368.70x = 20,464,450,281.77
  5. Step 5: Solve for x
    x = 20,464,450,281.77/163,368.70
  6. Step 6: Final answer
    x = 125,265.43

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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.