Home / 153,939.64-212,472.12-90,297.94

Finding the Fourth Proportional to 153,939.64, 212,472.12 and 90,297.94

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Solution

The fourth proportional to 153,939.64, 212,472.12 and 90,297.94 is: 124,631.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,939.64 : 212,472.12 = 90,297.94 : x
  2. Step 2: Convert to fraction form
    153,939.64/212,472.12 = 90,297.94/x
  3. Step 3: Cross multiply
    153,939.64x = 212,472.12 × 90,297.94
  4. Step 4: Simplify right side
    153,939.64x = 19,185,794,743.43
  5. Step 5: Solve for x
    x = 19,185,794,743.43/153,939.64
  6. Step 6: Final answer
    x = 124,631.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.