Home / 154,159.71-212,741.25-86,179.54

Finding the Fourth Proportional to 154,159.71, 212,741.25 and 86,179.54

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Solution

The fourth proportional to 154,159.71, 212,741.25 and 86,179.54 is: 118,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,159.71 : 212,741.25 = 86,179.54 : x
  2. Step 2: Convert to fraction form
    154,159.71/212,741.25 = 86,179.54/x
  3. Step 3: Cross multiply
    154,159.71x = 212,741.25 × 86,179.54
  4. Step 4: Simplify right side
    154,159.71x = 18,333,942,633.13
  5. Step 5: Solve for x
    x = 18,333,942,633.13/154,159.71
  6. Step 6: Final answer
    x = 118,928.24

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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.