Home / 148,998.36-205,612.07-81,015.38

Finding the Fourth Proportional to 148,998.36, 205,612.07 and 81,015.38

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Solution

The fourth proportional to 148,998.36, 205,612.07 and 81,015.38 is: 111,798.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,998.36 : 205,612.07 = 81,015.38 : x
  2. Step 2: Convert to fraction form
    148,998.36/205,612.07 = 81,015.38/x
  3. Step 3: Cross multiply
    148,998.36x = 205,612.07 × 81,015.38
  4. Step 4: Simplify right side
    148,998.36x = 16,657,739,983.64
  5. Step 5: Solve for x
    x = 16,657,739,983.64/148,998.36
  6. Step 6: Final answer
    x = 111,798.14

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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.