Home / 145,411.21-218,116.83-45,571.39

Finding the Fourth Proportional to 145,411.21, 218,116.83 and 45,571.39

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Solution

The fourth proportional to 145,411.21, 218,116.83 and 45,571.39 is: 68,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,411.21 : 218,116.83 = 45,571.39 : x
  2. Step 2: Convert to fraction form
    145,411.21/218,116.83 = 45,571.39/x
  3. Step 3: Cross multiply
    145,411.21x = 218,116.83 × 45,571.39
  4. Step 4: Simplify right side
    145,411.21x = 9,939,887,125.49
  5. Step 5: Solve for x
    x = 9,939,887,125.49/145,411.21
  6. Step 6: Final answer
    x = 68,357.09

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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.