Home / 122,153.38-168,569.67-68,438.05

Finding the Fourth Proportional to 122,153.38, 168,569.67 and 68,438.05

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Solution

The fourth proportional to 122,153.38, 168,569.67 and 68,438.05 is: 94,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,153.38 : 168,569.67 = 68,438.05 : x
  2. Step 2: Convert to fraction form
    122,153.38/168,569.67 = 68,438.05/x
  3. Step 3: Cross multiply
    122,153.38x = 168,569.67 × 68,438.05
  4. Step 4: Simplify right side
    122,153.38x = 11,536,579,503.94
  5. Step 5: Solve for x
    x = 11,536,579,503.94/122,153.38
  6. Step 6: Final answer
    x = 94,443.39

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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.