Home / 145,411.20-218,116.40-45,571.82

Finding the Fourth Proportional to 145,411.20, 218,116.40 and 45,571.82

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Solution

The fourth proportional to 145,411.20, 218,116.40 and 45,571.82 is: 68,357.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,411.20 : 218,116.40 = 45,571.82 : x
  2. Step 2: Convert to fraction form
    145,411.20/218,116.40 = 45,571.82/x
  3. Step 3: Cross multiply
    145,411.20x = 218,116.40 × 45,571.82
  4. Step 4: Simplify right side
    145,411.20x = 9,939,960,001.41
  5. Step 5: Solve for x
    x = 9,939,960,001.41/145,411.20
  6. Step 6: Final answer
    x = 68,357.60

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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.