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Finding the Fourth Proportional to 122,401.80, 183,602.70 and 69,816.60

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Solution

The fourth proportional to 122,401.80, 183,602.70 and 69,816.60 is: 104,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,401.80 : 183,602.70 = 69,816.60 : x
  2. Step 2: Convert to fraction form
    122,401.80/183,602.70 = 69,816.60/x
  3. Step 3: Cross multiply
    122,401.80x = 183,602.70 × 69,816.60
  4. Step 4: Simplify right side
    122,401.80x = 12,818,516,264.82
  5. Step 5: Solve for x
    x = 12,818,516,264.82/122,401.80
  6. Step 6: Final answer
    x = 104,724.90

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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.