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Finding the Fourth Proportional to 130,621.70, 196,019.93 and 47,515.70

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Solution

The fourth proportional to 130,621.70, 196,019.93 and 47,515.70 is: 71,305.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,621.70 : 196,019.93 = 47,515.70 : x
  2. Step 2: Convert to fraction form
    130,621.70/196,019.93 = 47,515.70/x
  3. Step 3: Cross multiply
    130,621.70x = 196,019.93 × 47,515.70
  4. Step 4: Simplify right side
    130,621.70x = 9,314,022,970.22
  5. Step 5: Solve for x
    x = 9,314,022,970.22/130,621.70
  6. Step 6: Final answer
    x = 71,305.33

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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.