Home / 114,667.20-172,000.80-86,673.60

Finding the Fourth Proportional to 114,667.20, 172,000.80 and 86,673.60

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Solution

The fourth proportional to 114,667.20, 172,000.80 and 86,673.60 is: 130,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,667.20 : 172,000.80 = 86,673.60 : x
  2. Step 2: Convert to fraction form
    114,667.20/172,000.80 = 86,673.60/x
  3. Step 3: Cross multiply
    114,667.20x = 172,000.80 × 86,673.60
  4. Step 4: Simplify right side
    114,667.20x = 14,907,928,538.88
  5. Step 5: Solve for x
    x = 14,907,928,538.88/114,667.20
  6. Step 6: Final answer
    x = 130,010.40

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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.