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Finding the Fourth Proportional to 122,901.76, 169,607.66 and 69,188.74

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Solution

The fourth proportional to 122,901.76, 169,607.66 and 69,188.74 is: 95,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,901.76 : 169,607.66 = 69,188.74 : x
  2. Step 2: Convert to fraction form
    122,901.76/169,607.66 = 69,188.74/x
  3. Step 3: Cross multiply
    122,901.76x = 169,607.66 × 69,188.74
  4. Step 4: Simplify right side
    122,901.76x = 11,734,939,519.79
  5. Step 5: Solve for x
    x = 11,734,939,519.79/122,901.76
  6. Step 6: Final answer
    x = 95,482.27

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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.