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Finding the Fourth Proportional to 162,041.49, 223,628.55 and 90,422.70

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Solution

The fourth proportional to 162,041.49, 223,628.55 and 90,422.70 is: 124,789.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,041.49 : 223,628.55 = 90,422.70 : x
  2. Step 2: Convert to fraction form
    162,041.49/223,628.55 = 90,422.70/x
  3. Step 3: Cross multiply
    162,041.49x = 223,628.55 × 90,422.70
  4. Step 4: Simplify right side
    162,041.49x = 20,221,097,288.09
  5. Step 5: Solve for x
    x = 20,221,097,288.09/162,041.49
  6. Step 6: Final answer
    x = 124,789.63

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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.