Home / 153,927.20-212,467.92-90,290.72

Finding the Fourth Proportional to 153,927.20, 212,467.92 and 90,290.72

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Solution

The fourth proportional to 153,927.20, 212,467.92 and 90,290.72 is: 124,629.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,927.20 : 212,467.92 = 90,290.72 : x
  2. Step 2: Convert to fraction form
    153,927.20/212,467.92 = 90,290.72/x
  3. Step 3: Cross multiply
    153,927.20x = 212,467.92 × 90,290.72
  4. Step 4: Simplify right side
    153,927.20x = 19,183,881,473.70
  5. Step 5: Solve for x
    x = 19,183,881,473.70/153,927.20
  6. Step 6: Final answer
    x = 124,629.57

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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.