Home / 122,018.90-168,336.42-76,682.36

Finding the Fourth Proportional to 122,018.90, 168,336.42 and 76,682.36

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Solution

The fourth proportional to 122,018.90, 168,336.42 and 76,682.36 is: 105,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,018.90 : 168,336.42 = 76,682.36 : x
  2. Step 2: Convert to fraction form
    122,018.90/168,336.42 = 76,682.36/x
  3. Step 3: Cross multiply
    122,018.90x = 168,336.42 × 76,682.36
  4. Step 4: Simplify right side
    122,018.90x = 12,908,433,959.55
  5. Step 5: Solve for x
    x = 12,908,433,959.55/122,018.90
  6. Step 6: Final answer
    x = 105,790.45

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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.