Home / 121,257.70-181,886.55-112,400.35

Finding the Fourth Proportional to 121,257.70, 181,886.55 and 112,400.35

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Solution

The fourth proportional to 121,257.70, 181,886.55 and 112,400.35 is: 168,600.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,257.70 : 181,886.55 = 112,400.35 : x
  2. Step 2: Convert to fraction form
    121,257.70/181,886.55 = 112,400.35/x
  3. Step 3: Cross multiply
    121,257.70x = 181,886.55 × 112,400.35
  4. Step 4: Simplify right side
    121,257.70x = 20,444,111,880.29
  5. Step 5: Solve for x
    x = 20,444,111,880.29/121,257.70
  6. Step 6: Final answer
    x = 168,600.53

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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.