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Finding the Fourth Proportional to 122,731.71, 169,368.69 and 69,015.58

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Solution

The fourth proportional to 122,731.71, 169,368.69 and 69,015.58 is: 95,240.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,731.71 : 169,368.69 = 69,015.58 : x
  2. Step 2: Convert to fraction form
    122,731.71/169,368.69 = 69,015.58/x
  3. Step 3: Cross multiply
    122,731.71x = 169,368.69 × 69,015.58
  4. Step 4: Simplify right side
    122,731.71x = 11,689,078,374.19
  5. Step 5: Solve for x
    x = 11,689,078,374.19/122,731.71
  6. Step 6: Final answer
    x = 95,240.90

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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.