Home / 170,821.90-256,232.85-100,780.30

Finding the Fourth Proportional to 170,821.90, 256,232.85 and 100,780.30

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Solution

The fourth proportional to 170,821.90, 256,232.85 and 100,780.30 is: 151,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,821.90 : 256,232.85 = 100,780.30 : x
  2. Step 2: Convert to fraction form
    170,821.90/256,232.85 = 100,780.30/x
  3. Step 3: Cross multiply
    170,821.90x = 256,232.85 × 100,780.30
  4. Step 4: Simplify right side
    170,821.90x = 25,823,223,492.86
  5. Step 5: Solve for x
    x = 25,823,223,492.86/170,821.90
  6. Step 6: Final answer
    x = 151,170.45

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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.