Home / 112,325.65-154,745.96-78,272.34

Finding the Fourth Proportional to 112,325.65, 154,745.96 and 78,272.34

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Solution

The fourth proportional to 112,325.65, 154,745.96 and 78,272.34 is: 107,832.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,325.65 : 154,745.96 = 78,272.34 : x
  2. Step 2: Convert to fraction form
    112,325.65/154,745.96 = 78,272.34/x
  3. Step 3: Cross multiply
    112,325.65x = 154,745.96 × 78,272.34
  4. Step 4: Simplify right side
    112,325.65x = 12,112,328,394.75
  5. Step 5: Solve for x
    x = 12,112,328,394.75/112,325.65
  6. Step 6: Final answer
    x = 107,832.26

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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.