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Finding the Fourth Proportional to 103,035.60, 154,407.60 and 90,496.80

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Solution

The fourth proportional to 103,035.60, 154,407.60 and 90,496.80 is: 135,617.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,035.60 : 154,407.60 = 90,496.80 : x
  2. Step 2: Convert to fraction form
    103,035.60/154,407.60 = 90,496.80/x
  3. Step 3: Cross multiply
    103,035.60x = 154,407.60 × 90,496.80
  4. Step 4: Simplify right side
    103,035.60x = 13,973,393,695.68
  5. Step 5: Solve for x
    x = 13,973,393,695.68/103,035.60
  6. Step 6: Final answer
    x = 135,617.14

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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.