Home / 230,106.88-317,537.28-128,137.60

Finding the Fourth Proportional to 230,106.88, 317,537.28 and 128,137.60

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Solution

The fourth proportional to 230,106.88, 317,537.28 and 128,137.60 is: 176,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,106.88 : 317,537.28 = 128,137.60 : x
  2. Step 2: Convert to fraction form
    230,106.88/317,537.28 = 128,137.60/x
  3. Step 3: Cross multiply
    230,106.88x = 317,537.28 × 128,137.60
  4. Step 4: Simplify right side
    230,106.88x = 40,688,464,969.73
  5. Step 5: Solve for x
    x = 40,688,464,969.73/230,106.88
  6. Step 6: Final answer
    x = 176,824.20

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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.