Home / 122,145.10-168,570.60-68,429.38

Finding the Fourth Proportional to 122,145.10, 168,570.60 and 68,429.38

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Solution

The fourth proportional to 122,145.10, 168,570.60 and 68,429.38 is: 94,438.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,145.10 : 168,570.60 = 68,429.38 : x
  2. Step 2: Convert to fraction form
    122,145.10/168,570.60 = 68,429.38/x
  3. Step 3: Cross multiply
    122,145.10x = 168,570.60 × 68,429.38
  4. Step 4: Simplify right side
    122,145.10x = 11,535,181,644.23
  5. Step 5: Solve for x
    x = 11,535,181,644.23/122,145.10
  6. Step 6: Final answer
    x = 94,438.35

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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.