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Finding the Fourth Proportional to 117,690.90, 162,416.60 and 63,979.52

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Solution

The fourth proportional to 117,690.90, 162,416.60 and 63,979.52 is: 88,293.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,690.90 : 162,416.60 = 63,979.52 : x
  2. Step 2: Convert to fraction form
    117,690.90/162,416.60 = 63,979.52/x
  3. Step 3: Cross multiply
    117,690.90x = 162,416.60 × 63,979.52
  4. Step 4: Simplify right side
    117,690.90x = 10,391,336,108.03
  5. Step 5: Solve for x
    x = 10,391,336,108.03/117,690.90
  6. Step 6: Final answer
    x = 88,293.45

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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.