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Finding the Fourth Proportional to 143,696.08, 215,544.12 and 43,856.80

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Solution

The fourth proportional to 143,696.08, 215,544.12 and 43,856.80 is: 65,785.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,696.08 : 215,544.12 = 43,856.80 : x
  2. Step 2: Convert to fraction form
    143,696.08/215,544.12 = 43,856.80/x
  3. Step 3: Cross multiply
    143,696.08x = 215,544.12 × 43,856.80
  4. Step 4: Simplify right side
    143,696.08x = 9,453,075,362.02
  5. Step 5: Solve for x
    x = 9,453,075,362.02/143,696.08
  6. Step 6: Final answer
    x = 65,785.20

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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.