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Finding the Fourth Proportional to 103,001.60, 154,356.60 and 90,462.80

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Solution

The fourth proportional to 103,001.60, 154,356.60 and 90,462.80 is: 135,566.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,001.60 : 154,356.60 = 90,462.80 : x
  2. Step 2: Convert to fraction form
    103,001.60/154,356.60 = 90,462.80/x
  3. Step 3: Cross multiply
    103,001.60x = 154,356.60 × 90,462.80
  4. Step 4: Simplify right side
    103,001.60x = 13,963,530,234.48
  5. Step 5: Solve for x
    x = 13,963,530,234.48/103,001.60
  6. Step 6: Final answer
    x = 135,566.15

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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.