Home / 128,653.36-177,541.96-72,065.04

Finding the Fourth Proportional to 128,653.36, 177,541.96 and 72,065.04

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Solution

The fourth proportional to 128,653.36, 177,541.96 and 72,065.04 is: 99,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,653.36 : 177,541.96 = 72,065.04 : x
  2. Step 2: Convert to fraction form
    128,653.36/177,541.96 = 72,065.04/x
  3. Step 3: Cross multiply
    128,653.36x = 177,541.96 × 72,065.04
  4. Step 4: Simplify right side
    128,653.36x = 12,794,568,449.08
  5. Step 5: Solve for x
    x = 12,794,568,449.08/128,653.36
  6. Step 6: Final answer
    x = 99,449.94

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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.