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Finding the Fourth Proportional to 102,994.60, 154,362.30 and 91,330.60

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Solution

The fourth proportional to 102,994.60, 154,362.30 and 91,330.60 is: 136,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,994.60 : 154,362.30 = 91,330.60 : x
  2. Step 2: Convert to fraction form
    102,994.60/154,362.30 = 91,330.60/x
  3. Step 3: Cross multiply
    102,994.60x = 154,362.30 × 91,330.60
  4. Step 4: Simplify right side
    102,994.60x = 14,098,001,476.38
  5. Step 5: Solve for x
    x = 14,098,001,476.38/102,994.60
  6. Step 6: Final answer
    x = 136,880.98

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1.5x scale

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.