Home / 145,943.76-218,520.80-75,675.36

Finding the Fourth Proportional to 145,943.76, 218,520.80 and 75,675.36

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Solution

The fourth proportional to 145,943.76, 218,520.80 and 75,675.36 is: 113,308.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,943.76 : 218,520.80 = 75,675.36 : x
  2. Step 2: Convert to fraction form
    145,943.76/218,520.80 = 75,675.36/x
  3. Step 3: Cross multiply
    145,943.76x = 218,520.80 × 75,675.36
  4. Step 4: Simplify right side
    145,943.76x = 16,536,640,207.49
  5. Step 5: Solve for x
    x = 16,536,640,207.49/145,943.76
  6. Step 6: Final answer
    x = 113,308.31

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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.