Home / 106,218.15-159,272.32-31,328.74

Finding the Fourth Proportional to 106,218.15, 159,272.32 and 31,328.74

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Solution

The fourth proportional to 106,218.15, 159,272.32 and 31,328.74 is: 46,976.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,218.15 : 159,272.32 = 31,328.74 : x
  2. Step 2: Convert to fraction form
    106,218.15/159,272.32 = 31,328.74/x
  3. Step 3: Cross multiply
    106,218.15x = 159,272.32 × 31,328.74
  4. Step 4: Simplify right side
    106,218.15x = 4,989,801,102.48
  5. Step 5: Solve for x
    x = 4,989,801,102.48/106,218.15
  6. Step 6: Final answer
    x = 46,976.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.