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Finding the Fourth Proportional to 139,706.94, 209,562.34 and 39,867.12

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Solution

The fourth proportional to 139,706.94, 209,562.34 and 39,867.12 is: 59,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,706.94 : 209,562.34 = 39,867.12 : x
  2. Step 2: Convert to fraction form
    139,706.94/209,562.34 = 39,867.12/x
  3. Step 3: Cross multiply
    139,706.94x = 209,562.34 × 39,867.12
  4. Step 4: Simplify right side
    139,706.94x = 8,354,646,956.26
  5. Step 5: Solve for x
    x = 8,354,646,956.26/139,706.94
  6. Step 6: Final answer
    x = 59,801.23

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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.