Home / 129,094.74-178,201.53-81,339.21

Finding the Fourth Proportional to 129,094.74, 178,201.53 and 81,339.21

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Solution

The fourth proportional to 129,094.74, 178,201.53 and 81,339.21 is: 112,280.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,094.74 : 178,201.53 = 81,339.21 : x
  2. Step 2: Convert to fraction form
    129,094.74/178,201.53 = 81,339.21/x
  3. Step 3: Cross multiply
    129,094.74x = 178,201.53 × 81,339.21
  4. Step 4: Simplify right side
    129,094.74x = 14,494,771,670.99
  5. Step 5: Solve for x
    x = 14,494,771,670.99/129,094.74
  6. Step 6: Final answer
    x = 112,280.11

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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.