Home / 122,453.18-168,992.94-81,547.16

Finding the Fourth Proportional to 122,453.18, 168,992.94 and 81,547.16

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Solution

The fourth proportional to 122,453.18, 168,992.94 and 81,547.16 is: 112,540.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,453.18 : 168,992.94 = 81,547.16 : x
  2. Step 2: Convert to fraction form
    122,453.18/168,992.94 = 81,547.16/x
  3. Step 3: Cross multiply
    122,453.18x = 168,992.94 × 81,547.16
  4. Step 4: Simplify right side
    122,453.18x = 13,780,894,317.05
  5. Step 5: Solve for x
    x = 13,780,894,317.05/122,453.18
  6. Step 6: Final answer
    x = 112,540.11

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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.