Home / 128,724.90-177,577.23-111,705.24

Finding the Fourth Proportional to 128,724.90, 177,577.23 and 111,705.24

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Solution

The fourth proportional to 128,724.90, 177,577.23 and 111,705.24 is: 154,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,724.90 : 177,577.23 = 111,705.24 : x
  2. Step 2: Convert to fraction form
    128,724.90/177,577.23 = 111,705.24/x
  3. Step 3: Cross multiply
    128,724.90x = 177,577.23 × 111,705.24
  4. Step 4: Simplify right side
    128,724.90x = 19,836,307,552.15
  5. Step 5: Solve for x
    x = 19,836,307,552.15/128,724.90
  6. Step 6: Final answer
    x = 154,098.45

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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.