Home / 145,661.41-201,031.91-82,011.61

Finding the Fourth Proportional to 145,661.41, 201,031.91 and 82,011.61

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Solution

The fourth proportional to 145,661.41, 201,031.91 and 82,011.61 is: 113,186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,661.41 : 201,031.91 = 82,011.61 : x
  2. Step 2: Convert to fraction form
    145,661.41/201,031.91 = 82,011.61/x
  3. Step 3: Cross multiply
    145,661.41x = 201,031.91 × 82,011.61
  4. Step 4: Simplify right side
    145,661.41x = 16,486,950,600.48
  5. Step 5: Solve for x
    x = 16,486,950,600.48/145,661.41
  6. Step 6: Final answer
    x = 113,186.81

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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.