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Finding the Fourth Proportional to 143,925, 215,888.88 and 55,157.40

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Solution

The fourth proportional to 143,925, 215,888.88 and 55,157.40 is: 82,736.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,925 : 215,888.88 = 55,157.40 : x
  2. Step 2: Convert to fraction form
    143,925/215,888.88 = 55,157.40/x
  3. Step 3: Cross multiply
    143,925x = 215,888.88 × 55,157.40
  4. Step 4: Simplify right side
    143,925x = 11,907,869,309.71
  5. Step 5: Solve for x
    x = 11,907,869,309.71/143,925
  6. Step 6: Final answer
    x = 82,736.63

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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.