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Finding the Fourth Proportional to 146,015.75, 201,501.74 and 78,947.75

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Solution

The fourth proportional to 146,015.75, 201,501.74 and 78,947.75 is: 108,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,015.75 : 201,501.74 = 78,947.75 : x
  2. Step 2: Convert to fraction form
    146,015.75/201,501.74 = 78,947.75/x
  3. Step 3: Cross multiply
    146,015.75x = 201,501.74 × 78,947.75
  4. Step 4: Simplify right side
    146,015.75x = 15,908,108,994.09
  5. Step 5: Solve for x
    x = 15,908,108,994.09/146,015.75
  6. Step 6: Final answer
    x = 108,947.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.