Home / 115,921.76-159,814.96-99,106.63

Finding the Fourth Proportional to 115,921.76, 159,814.96 and 99,106.63

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Solution

The fourth proportional to 115,921.76, 159,814.96 and 99,106.63 is: 136,632.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,921.76 : 159,814.96 = 99,106.63 : x
  2. Step 2: Convert to fraction form
    115,921.76/159,814.96 = 99,106.63/x
  3. Step 3: Cross multiply
    115,921.76x = 159,814.96 × 99,106.63
  4. Step 4: Simplify right side
    115,921.76x = 15,838,722,109.18
  5. Step 5: Solve for x
    x = 15,838,722,109.18/115,921.76
  6. Step 6: Final answer
    x = 136,632.86

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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.