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Finding the Fourth Proportional to 103,479.60, 155,219.40 and 93,638.10

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Solution

The fourth proportional to 103,479.60, 155,219.40 and 93,638.10 is: 140,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,479.60 : 155,219.40 = 93,638.10 : x
  2. Step 2: Convert to fraction form
    103,479.60/155,219.40 = 93,638.10/x
  3. Step 3: Cross multiply
    103,479.60x = 155,219.40 × 93,638.10
  4. Step 4: Simplify right side
    103,479.60x = 14,534,449,699.14
  5. Step 5: Solve for x
    x = 14,534,449,699.14/103,479.60
  6. Step 6: Final answer
    x = 140,457.15

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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.