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Finding the Fourth Proportional to 117,690.40, 162,396.72 and 69,926.32

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Solution

The fourth proportional to 117,690.40, 162,396.72 and 69,926.32 is: 96,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,690.40 : 162,396.72 = 69,926.32 : x
  2. Step 2: Convert to fraction form
    117,690.40/162,396.72 = 69,926.32/x
  3. Step 3: Cross multiply
    117,690.40x = 162,396.72 × 69,926.32
  4. Step 4: Simplify right side
    117,690.40x = 11,355,805,009.67
  5. Step 5: Solve for x
    x = 11,355,805,009.67/117,690.40
  6. Step 6: Final answer
    x = 96,488.80

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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.