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Finding the Fourth Proportional to 162,405.99, 224,120.55 and 90,785.94

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Solution

The fourth proportional to 162,405.99, 224,120.55 and 90,785.94 is: 125,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,405.99 : 224,120.55 = 90,785.94 : x
  2. Step 2: Convert to fraction form
    162,405.99/224,120.55 = 90,785.94/x
  3. Step 3: Cross multiply
    162,405.99x = 224,120.55 × 90,785.94
  4. Step 4: Simplify right side
    162,405.99x = 20,346,994,805.07
  5. Step 5: Solve for x
    x = 20,346,994,805.07/162,405.99
  6. Step 6: Final answer
    x = 125,284.76

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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.