Home / 154,631.76-213,371.91-90,946.32

Finding the Fourth Proportional to 154,631.76, 213,371.91 and 90,946.32

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Solution

The fourth proportional to 154,631.76, 213,371.91 and 90,946.32 is: 125,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,631.76 : 213,371.91 = 90,946.32 : x
  2. Step 2: Convert to fraction form
    154,631.76/213,371.91 = 90,946.32/x
  3. Step 3: Cross multiply
    154,631.76x = 213,371.91 × 90,946.32
  4. Step 4: Simplify right side
    154,631.76x = 19,405,390,005.87
  5. Step 5: Solve for x
    x = 19,405,390,005.87/154,631.76
  6. Step 6: Final answer
    x = 125,494.21

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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.