Home / 122,012.16-168,369-68,288.10

Finding the Fourth Proportional to 122,012.16, 168,369 and 68,288.10

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Solution

The fourth proportional to 122,012.16, 168,369 and 68,288.10 is: 94,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,012.16 : 168,369 = 68,288.10 : x
  2. Step 2: Convert to fraction form
    122,012.16/168,369 = 68,288.10/x
  3. Step 3: Cross multiply
    122,012.16x = 168,369 × 68,288.10
  4. Step 4: Simplify right side
    122,012.16x = 11,497,599,108.90
  5. Step 5: Solve for x
    x = 11,497,599,108.90/122,012.16
  6. Step 6: Final answer
    x = 94,233.22

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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.