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Finding the Fourth Proportional to 102,994.10, 154,491.15 and 91,330.10

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Solution

The fourth proportional to 102,994.10, 154,491.15 and 91,330.10 is: 136,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,994.10 : 154,491.15 = 91,330.10 : x
  2. Step 2: Convert to fraction form
    102,994.10/154,491.15 = 91,330.10/x
  3. Step 3: Cross multiply
    102,994.10x = 154,491.15 × 91,330.10
  4. Step 4: Simplify right side
    102,994.10x = 14,109,692,178.62
  5. Step 5: Solve for x
    x = 14,109,692,178.62/102,994.10
  6. Step 6: Final answer
    x = 136,995.15

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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.