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Finding the Fourth Proportional to 122,721.74, 169,352.63 and 69,005.37

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Solution

The fourth proportional to 122,721.74, 169,352.63 and 69,005.37 is: 95,225.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,721.74 : 169,352.63 = 69,005.37 : x
  2. Step 2: Convert to fraction form
    122,721.74/169,352.63 = 69,005.37/x
  3. Step 3: Cross multiply
    122,721.74x = 169,352.63 × 69,005.37
  4. Step 4: Simplify right side
    122,721.74x = 11,686,240,548.60
  5. Step 5: Solve for x
    x = 11,686,240,548.60/122,721.74
  6. Step 6: Final answer
    x = 95,225.52

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1.5x scale

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.