Home / 122,115.31-168,518.13-68,400.83

Finding the Fourth Proportional to 122,115.31, 168,518.13 and 68,400.83

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Solution

The fourth proportional to 122,115.31, 168,518.13 and 68,400.83 is: 94,392.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,115.31 : 168,518.13 = 68,400.83 : x
  2. Step 2: Convert to fraction form
    122,115.31/168,518.13 = 68,400.83/x
  3. Step 3: Cross multiply
    122,115.31x = 168,518.13 × 68,400.83
  4. Step 4: Simplify right side
    122,115.31x = 11,526,779,962.05
  5. Step 5: Solve for x
    x = 11,526,779,962.05/122,115.31
  6. Step 6: Final answer
    x = 94,392.59

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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.