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Finding the Fourth Proportional to 117,574.54, 162,142.34 and 90,674.44

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Solution

The fourth proportional to 117,574.54, 162,142.34 and 90,674.44 is: 125,045.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,574.54 : 162,142.34 = 90,674.44 : x
  2. Step 2: Convert to fraction form
    117,574.54/162,142.34 = 90,674.44/x
  3. Step 3: Cross multiply
    117,574.54x = 162,142.34 × 90,674.44
  4. Step 4: Simplify right side
    117,574.54x = 14,702,165,879.79
  5. Step 5: Solve for x
    x = 14,702,165,879.79/117,574.54
  6. Step 6: Final answer
    x = 125,045.49

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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.