Home / 121,939.40-183,823.06-113,811.05

Finding the Fourth Proportional to 121,939.40, 183,823.06 and 113,811.05

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Solution

The fourth proportional to 121,939.40, 183,823.06 and 113,811.05 is: 171,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,939.40 : 183,823.06 = 113,811.05 : x
  2. Step 2: Convert to fraction form
    121,939.40/183,823.06 = 113,811.05/x
  3. Step 3: Cross multiply
    121,939.40x = 183,823.06 × 113,811.05
  4. Step 4: Simplify right side
    121,939.40x = 20,921,095,472.81
  5. Step 5: Solve for x
    x = 20,921,095,472.81/121,939.40
  6. Step 6: Final answer
    x = 171,569.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.