Home / 170,051.45-255,175.74-85,818.20

Finding the Fourth Proportional to 170,051.45, 255,175.74 and 85,818.20

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Solution

The fourth proportional to 170,051.45, 255,175.74 and 85,818.20 is: 128,777.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,051.45 : 255,175.74 = 85,818.20 : x
  2. Step 2: Convert to fraction form
    170,051.45/255,175.74 = 85,818.20/x
  3. Step 3: Cross multiply
    170,051.45x = 255,175.74 × 85,818.20
  4. Step 4: Simplify right side
    170,051.45x = 21,898,720,985.50
  5. Step 5: Solve for x
    x = 21,898,720,985.50/170,051.45
  6. Step 6: Final answer
    x = 128,777.04

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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.