Home / 144,449.78-216,497.16-81,136.80

Finding the Fourth Proportional to 144,449.78, 216,497.16 and 81,136.80

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Solution

The fourth proportional to 144,449.78, 216,497.16 and 81,136.80 is: 121,605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,449.78 : 216,497.16 = 81,136.80 : x
  2. Step 2: Convert to fraction form
    144,449.78/216,497.16 = 81,136.80/x
  3. Step 3: Cross multiply
    144,449.78x = 216,497.16 × 81,136.80
  4. Step 4: Simplify right side
    144,449.78x = 17,565,886,771.49
  5. Step 5: Solve for x
    x = 17,565,886,771.49/144,449.78
  6. Step 6: Final answer
    x = 121,605.50

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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.