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Finding the Fourth Proportional to 118,443.36, 177,788.04 and 68,620.76

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Solution

The fourth proportional to 118,443.36, 177,788.04 and 68,620.76 is: 103,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,443.36 : 177,788.04 = 68,620.76 : x
  2. Step 2: Convert to fraction form
    118,443.36/177,788.04 = 68,620.76/x
  3. Step 3: Cross multiply
    118,443.36x = 177,788.04 × 68,620.76
  4. Step 4: Simplify right side
    118,443.36x = 12,199,950,423.71
  5. Step 5: Solve for x
    x = 12,199,950,423.71/118,443.36
  6. Step 6: Final answer
    x = 103,002.40

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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.