Home / 115,921.45-159,814.53-99,106.32

Finding the Fourth Proportional to 115,921.45, 159,814.53 and 99,106.32

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Solution

The fourth proportional to 115,921.45, 159,814.53 and 99,106.32 is: 136,632.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,921.45 : 159,814.53 = 99,106.32 : x
  2. Step 2: Convert to fraction form
    115,921.45/159,814.53 = 99,106.32/x
  3. Step 3: Cross multiply
    115,921.45x = 159,814.53 × 99,106.32
  4. Step 4: Simplify right side
    115,921.45x = 15,838,629,950.83
  5. Step 5: Solve for x
    x = 15,838,629,950.83/115,921.45
  6. Step 6: Final answer
    x = 136,632.44

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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.