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Finding the Fourth Proportional to 102,890.70, 154,336.05 and 36,330.30

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Solution

The fourth proportional to 102,890.70, 154,336.05 and 36,330.30 is: 54,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,890.70 : 154,336.05 = 36,330.30 : x
  2. Step 2: Convert to fraction form
    102,890.70/154,336.05 = 36,330.30/x
  3. Step 3: Cross multiply
    102,890.70x = 154,336.05 × 36,330.30
  4. Step 4: Simplify right side
    102,890.70x = 5,607,074,997.32
  5. Step 5: Solve for x
    x = 5,607,074,997.32/102,890.70
  6. Step 6: Final answer
    x = 54,495.45

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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.