Home / 87,629.10-131,443.65-70,133.10

Finding the Fourth Proportional to 87,629.10, 131,443.65 and 70,133.10

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Solution

The fourth proportional to 87,629.10, 131,443.65 and 70,133.10 is: 105,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,629.10 : 131,443.65 = 70,133.10 : x
  2. Step 2: Convert to fraction form
    87,629.10/131,443.65 = 70,133.10/x
  3. Step 3: Cross multiply
    87,629.10x = 131,443.65 × 70,133.10
  4. Step 4: Simplify right side
    87,629.10x = 9,218,550,649.82
  5. Step 5: Solve for x
    x = 9,218,550,649.82/87,629.10
  6. Step 6: Final answer
    x = 105,199.65

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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.