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Finding the Fourth Proportional to 119,620.40, 179,430.60 and 102,707.60

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Solution

The fourth proportional to 119,620.40, 179,430.60 and 102,707.60 is: 154,061.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,620.40 : 179,430.60 = 102,707.60 : x
  2. Step 2: Convert to fraction form
    119,620.40/179,430.60 = 102,707.60/x
  3. Step 3: Cross multiply
    119,620.40x = 179,430.60 × 102,707.60
  4. Step 4: Simplify right side
    119,620.40x = 18,428,886,292.56
  5. Step 5: Solve for x
    x = 18,428,886,292.56/119,620.40
  6. Step 6: Final answer
    x = 154,061.40

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Why These Related Problems?

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