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Finding the Fourth Proportional to 122,477.30, 183,715.95 and 69,892.10

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Solution

The fourth proportional to 122,477.30, 183,715.95 and 69,892.10 is: 104,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,477.30 : 183,715.95 = 69,892.10 : x
  2. Step 2: Convert to fraction form
    122,477.30/183,715.95 = 69,892.10/x
  3. Step 3: Cross multiply
    122,477.30x = 183,715.95 × 69,892.10
  4. Step 4: Simplify right side
    122,477.30x = 12,840,293,549.00
  5. Step 5: Solve for x
    x = 12,840,293,549.00/122,477.30
  6. Step 6: Final answer
    x = 104,838.15

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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.