Home / 128,454.10-177,436.07-98,608.23

Finding the Fourth Proportional to 128,454.10, 177,436.07 and 98,608.23

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Solution

The fourth proportional to 128,454.10, 177,436.07 and 98,608.23 is: 136,209.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,454.10 : 177,436.07 = 98,608.23 : x
  2. Step 2: Convert to fraction form
    128,454.10/177,436.07 = 98,608.23/x
  3. Step 3: Cross multiply
    128,454.10x = 177,436.07 × 98,608.23
  4. Step 4: Simplify right side
    128,454.10x = 17,496,656,800.86
  5. Step 5: Solve for x
    x = 17,496,656,800.86/128,454.10
  6. Step 6: Final answer
    x = 136,209.41

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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.