Home / 128,271.26-176,899.74-80,529.06

Finding the Fourth Proportional to 128,271.26, 176,899.74 and 80,529.06

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Solution

The fourth proportional to 128,271.26, 176,899.74 and 80,529.06 is: 111,058.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,271.26 : 176,899.74 = 80,529.06 : x
  2. Step 2: Convert to fraction form
    128,271.26/176,899.74 = 80,529.06/x
  3. Step 3: Cross multiply
    128,271.26x = 176,899.74 × 80,529.06
  4. Step 4: Simplify right side
    128,271.26x = 14,245,569,776.44
  5. Step 5: Solve for x
    x = 14,245,569,776.44/128,271.26
  6. Step 6: Final answer
    x = 111,058.16

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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.