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Finding the Fourth Proportional to 163,620.30, 245,430.45 and 84,758.70

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Solution

The fourth proportional to 163,620.30, 245,430.45 and 84,758.70 is: 127,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,620.30 : 245,430.45 = 84,758.70 : x
  2. Step 2: Convert to fraction form
    163,620.30/245,430.45 = 84,758.70/x
  3. Step 3: Cross multiply
    163,620.30x = 245,430.45 × 84,758.70
  4. Step 4: Simplify right side
    163,620.30x = 20,802,365,882.42
  5. Step 5: Solve for x
    x = 20,802,365,882.42/163,620.30
  6. Step 6: Final answer
    x = 127,138.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.