Home / 118,515.20-163,562.09-64,808.10

Finding the Fourth Proportional to 118,515.20, 163,562.09 and 64,808.10

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Solution

The fourth proportional to 118,515.20, 163,562.09 and 64,808.10 is: 89,441.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,515.20 : 163,562.09 = 64,808.10 : x
  2. Step 2: Convert to fraction form
    118,515.20/163,562.09 = 64,808.10/x
  3. Step 3: Cross multiply
    118,515.20x = 163,562.09 × 64,808.10
  4. Step 4: Simplify right side
    118,515.20x = 10,600,147,960.89
  5. Step 5: Solve for x
    x = 10,600,147,960.89/118,515.20
  6. Step 6: Final answer
    x = 89,441.25

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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.