Home / 103,721.96-143,139.22-63,435

Finding the Fourth Proportional to 103,721.96, 143,139.22 and 63,435

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Solution

The fourth proportional to 103,721.96, 143,139.22 and 63,435 is: 87,542.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,721.96 : 143,139.22 = 63,435 : x
  2. Step 2: Convert to fraction form
    103,721.96/143,139.22 = 63,435/x
  3. Step 3: Cross multiply
    103,721.96x = 143,139.22 × 63,435
  4. Step 4: Simplify right side
    103,721.96x = 9,080,036,420.70
  5. Step 5: Solve for x
    x = 9,080,036,420.70/103,721.96
  6. Step 6: Final answer
    x = 87,542.08

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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.