Home / 128,874.02-177,441.98-117,064.22

Finding the Fourth Proportional to 128,874.02, 177,441.98 and 117,064.22

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Solution

The fourth proportional to 128,874.02, 177,441.98 and 117,064.22 is: 161,181.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,874.02 : 177,441.98 = 117,064.22 : x
  2. Step 2: Convert to fraction form
    128,874.02/177,441.98 = 117,064.22/x
  3. Step 3: Cross multiply
    128,874.02x = 177,441.98 × 117,064.22
  4. Step 4: Simplify right side
    128,874.02x = 20,772,106,983.96
  5. Step 5: Solve for x
    x = 20,772,106,983.96/128,874.02
  6. Step 6: Final answer
    x = 161,181.49

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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.