Home / 150,983.84-208,415.76-100,664.48

Finding the Fourth Proportional to 150,983.84, 208,415.76 and 100,664.48

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Solution

The fourth proportional to 150,983.84, 208,415.76 and 100,664.48 is: 138,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,983.84 : 208,415.76 = 100,664.48 : x
  2. Step 2: Convert to fraction form
    150,983.84/208,415.76 = 100,664.48/x
  3. Step 3: Cross multiply
    150,983.84x = 208,415.76 × 100,664.48
  4. Step 4: Simplify right side
    150,983.84x = 20,980,064,104.20
  5. Step 5: Solve for x
    x = 20,980,064,104.20/150,983.84
  6. Step 6: Final answer
    x = 138,955.69

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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.