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Finding the Fourth Proportional to 144,297.43, 216,494.13 and 90,927.74

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Solution

The fourth proportional to 144,297.43, 216,494.13 and 90,927.74 is: 136,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,297.43 : 216,494.13 = 90,927.74 : x
  2. Step 2: Convert to fraction form
    144,297.43/216,494.13 = 90,927.74/x
  3. Step 3: Cross multiply
    144,297.43x = 216,494.13 × 90,927.74
  4. Step 4: Simplify right side
    144,297.43x = 19,685,321,964.17
  5. Step 5: Solve for x
    x = 19,685,321,964.17/144,297.43
  6. Step 6: Final answer
    x = 136,421.85

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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.