Home / 171,680.18-257,448.99-66,438.50

Finding the Fourth Proportional to 171,680.18, 257,448.99 and 66,438.50

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Solution

The fourth proportional to 171,680.18, 257,448.99 and 66,438.50 is: 99,630.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,680.18 : 257,448.99 = 66,438.50 : x
  2. Step 2: Convert to fraction form
    171,680.18/257,448.99 = 66,438.50/x
  3. Step 3: Cross multiply
    171,680.18x = 257,448.99 × 66,438.50
  4. Step 4: Simplify right side
    171,680.18x = 17,104,524,722.12
  5. Step 5: Solve for x
    x = 17,104,524,722.12/171,680.18
  6. Step 6: Final answer
    x = 99,630.17

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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.