Home / 145,835.88-201,262.98-81,312.36

Finding the Fourth Proportional to 145,835.88, 201,262.98 and 81,312.36

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Solution

The fourth proportional to 145,835.88, 201,262.98 and 81,312.36 is: 112,216.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,835.88 : 201,262.98 = 81,312.36 : x
  2. Step 2: Convert to fraction form
    145,835.88/201,262.98 = 81,312.36/x
  3. Step 3: Cross multiply
    145,835.88x = 201,262.98 × 81,312.36
  4. Step 4: Simplify right side
    145,835.88x = 16,365,167,884.43
  5. Step 5: Solve for x
    x = 16,365,167,884.43/145,835.88
  6. Step 6: Final answer
    x = 112,216.33

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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.