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Finding the Fourth Proportional to 105,625.67, 158,438.43 and 42,445.80

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Solution

The fourth proportional to 105,625.67, 158,438.43 and 42,445.80 is: 63,668.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,625.67 : 158,438.43 = 42,445.80 : x
  2. Step 2: Convert to fraction form
    105,625.67/158,438.43 = 42,445.80/x
  3. Step 3: Cross multiply
    105,625.67x = 158,438.43 × 42,445.80
  4. Step 4: Simplify right side
    105,625.67x = 6,725,045,912.09
  5. Step 5: Solve for x
    x = 6,725,045,912.09/105,625.67
  6. Step 6: Final answer
    x = 63,668.67

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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.