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Finding the Fourth Proportional to 122,969.34, 169,619.67 and 77,568.03

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Solution

The fourth proportional to 122,969.34, 169,619.67 and 77,568.03 is: 106,994.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,969.34 : 169,619.67 = 77,568.03 : x
  2. Step 2: Convert to fraction form
    122,969.34/169,619.67 = 77,568.03/x
  3. Step 3: Cross multiply
    122,969.34x = 169,619.67 × 77,568.03
  4. Step 4: Simplify right side
    122,969.34x = 13,157,063,651.15
  5. Step 5: Solve for x
    x = 13,157,063,651.15/122,969.34
  6. Step 6: Final answer
    x = 106,994.67

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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.