Home / 128,256.36-176,993.10-71,667.24

Finding the Fourth Proportional to 128,256.36, 176,993.10 and 71,667.24

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Solution

The fourth proportional to 128,256.36, 176,993.10 and 71,667.24 is: 98,900.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,256.36 : 176,993.10 = 71,667.24 : x
  2. Step 2: Convert to fraction form
    128,256.36/176,993.10 = 71,667.24/x
  3. Step 3: Cross multiply
    128,256.36x = 176,993.10 × 71,667.24
  4. Step 4: Simplify right side
    128,256.36x = 12,684,606,976.04
  5. Step 5: Solve for x
    x = 12,684,606,976.04/128,256.36
  6. Step 6: Final answer
    x = 98,900.41

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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.