Home / 154,437.40-213,108.06-86,449.96

Finding the Fourth Proportional to 154,437.40, 213,108.06 and 86,449.96

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Solution

The fourth proportional to 154,437.40, 213,108.06 and 86,449.96 is: 119,292.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,437.40 : 213,108.06 = 86,449.96 : x
  2. Step 2: Convert to fraction form
    154,437.40/213,108.06 = 86,449.96/x
  3. Step 3: Cross multiply
    154,437.40x = 213,108.06 × 86,449.96
  4. Step 4: Simplify right side
    154,437.40x = 18,423,183,262.68
  5. Step 5: Solve for x
    x = 18,423,183,262.68/154,437.40
  6. Step 6: Final answer
    x = 119,292.24

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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.