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Finding the Fourth Proportional to 102,774.70, 154,140.45 and 43,612.30

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Solution

The fourth proportional to 102,774.70, 154,140.45 and 43,612.30 is: 65,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,774.70 : 154,140.45 = 43,612.30 : x
  2. Step 2: Convert to fraction form
    102,774.70/154,140.45 = 43,612.30/x
  3. Step 3: Cross multiply
    102,774.70x = 154,140.45 × 43,612.30
  4. Step 4: Simplify right side
    102,774.70x = 6,722,419,547.54
  5. Step 5: Solve for x
    x = 6,722,419,547.54/102,774.70
  6. Step 6: Final answer
    x = 65,409.28

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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.