Home / 170,999.10-256,498.65-100,140.30

Finding the Fourth Proportional to 170,999.10, 256,498.65 and 100,140.30

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Solution

The fourth proportional to 170,999.10, 256,498.65 and 100,140.30 is: 150,210.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,999.10 : 256,498.65 = 100,140.30 : x
  2. Step 2: Convert to fraction form
    170,999.10/256,498.65 = 100,140.30/x
  3. Step 3: Cross multiply
    170,999.10x = 256,498.65 × 100,140.30
  4. Step 4: Simplify right side
    170,999.10x = 25,685,851,760.60
  5. Step 5: Solve for x
    x = 25,685,851,760.60/170,999.10
  6. Step 6: Final answer
    x = 150,210.45

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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.