Home / 154,422.60-213,085.20-86,443.32

Finding the Fourth Proportional to 154,422.60, 213,085.20 and 86,443.32

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Solution

The fourth proportional to 154,422.60, 213,085.20 and 86,443.32 is: 119,281.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,422.60 : 213,085.20 = 86,443.32 : x
  2. Step 2: Convert to fraction form
    154,422.60/213,085.20 = 86,443.32/x
  3. Step 3: Cross multiply
    154,422.60x = 213,085.20 × 86,443.32
  4. Step 4: Simplify right side
    154,422.60x = 18,419,792,130.86
  5. Step 5: Solve for x
    x = 18,419,792,130.86/154,422.60
  6. Step 6: Final answer
    x = 119,281.71

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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.