Home / 112,325.15-154,745.27-78,271.84

Finding the Fourth Proportional to 112,325.15, 154,745.27 and 78,271.84

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Solution

The fourth proportional to 112,325.15, 154,745.27 and 78,271.84 is: 107,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,325.15 : 154,745.27 = 78,271.84 : x
  2. Step 2: Convert to fraction form
    112,325.15/154,745.27 = 78,271.84/x
  3. Step 3: Cross multiply
    112,325.15x = 154,745.27 × 78,271.84
  4. Step 4: Simplify right side
    112,325.15x = 12,112,197,014.20
  5. Step 5: Solve for x
    x = 12,112,197,014.20/112,325.15
  6. Step 6: Final answer
    x = 107,831.57

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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.