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Finding the Fourth Proportional to 121,014.70, 181,522.05 and 68,526.70

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Solution

The fourth proportional to 121,014.70, 181,522.05 and 68,526.70 is: 102,790.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014.70 : 181,522.05 = 68,526.70 : x
  2. Step 2: Convert to fraction form
    121,014.70/181,522.05 = 68,526.70/x
  3. Step 3: Cross multiply
    121,014.70x = 181,522.05 × 68,526.70
  4. Step 4: Simplify right side
    121,014.70x = 12,439,107,063.74
  5. Step 5: Solve for x
    x = 12,439,107,063.74/121,014.70
  6. Step 6: Final answer
    x = 102,790.05

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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.