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Finding the Fourth Proportional to 103,809.70, 155,714.55 and 93,640.15

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Solution

The fourth proportional to 103,809.70, 155,714.55 and 93,640.15 is: 140,460.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,809.70 : 155,714.55 = 93,640.15 : x
  2. Step 2: Convert to fraction form
    103,809.70/155,714.55 = 93,640.15/x
  3. Step 3: Cross multiply
    103,809.70x = 155,714.55 × 93,640.15
  4. Step 4: Simplify right side
    103,809.70x = 14,581,133,819.18
  5. Step 5: Solve for x
    x = 14,581,133,819.18/103,809.70
  6. Step 6: Final answer
    x = 140,460.23

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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.