Home / 190,905.36-286,274.52-78,510.48

Finding the Fourth Proportional to 190,905.36, 286,274.52 and 78,510.48

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Solution

The fourth proportional to 190,905.36, 286,274.52 and 78,510.48 is: 117,731.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,905.36 : 286,274.52 = 78,510.48 : x
  2. Step 2: Convert to fraction form
    190,905.36/286,274.52 = 78,510.48/x
  3. Step 3: Cross multiply
    190,905.36x = 286,274.52 × 78,510.48
  4. Step 4: Simplify right side
    190,905.36x = 22,475,549,976.97
  5. Step 5: Solve for x
    x = 22,475,549,976.97/190,905.36
  6. Step 6: Final answer
    x = 117,731.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.