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Finding the Fourth Proportional to 122,763.36, 169,411.76 and 69,048.36

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Solution

The fourth proportional to 122,763.36, 169,411.76 and 69,048.36 is: 95,285.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,763.36 : 169,411.76 = 69,048.36 : x
  2. Step 2: Convert to fraction form
    122,763.36/169,411.76 = 69,048.36/x
  3. Step 3: Cross multiply
    122,763.36x = 169,411.76 × 69,048.36
  4. Step 4: Simplify right side
    122,763.36x = 11,697,604,192.71
  5. Step 5: Solve for x
    x = 11,697,604,192.71/122,763.36
  6. Step 6: Final answer
    x = 95,285.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.