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Finding the Fourth Proportional to 121,745.71, 182,561.05 and 71,159.23

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Solution

The fourth proportional to 121,745.71, 182,561.05 and 71,159.23 is: 106,705.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,745.71 : 182,561.05 = 71,159.23 : x
  2. Step 2: Convert to fraction form
    121,745.71/182,561.05 = 71,159.23/x
  3. Step 3: Cross multiply
    121,745.71x = 182,561.05 × 71,159.23
  4. Step 4: Simplify right side
    121,745.71x = 12,990,903,745.99
  5. Step 5: Solve for x
    x = 12,990,903,745.99/121,745.71
  6. Step 6: Final answer
    x = 106,705.23

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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.