Home / 154,146.66-212,728.59-89,615.58

Finding the Fourth Proportional to 154,146.66, 212,728.59 and 89,615.58

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Solution

The fourth proportional to 154,146.66, 212,728.59 and 89,615.58 is: 123,673.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,146.66 : 212,728.59 = 89,615.58 : x
  2. Step 2: Convert to fraction form
    154,146.66/212,728.59 = 89,615.58/x
  3. Step 3: Cross multiply
    154,146.66x = 212,728.59 × 89,615.58
  4. Step 4: Simplify right side
    154,146.66x = 19,063,795,975.43
  5. Step 5: Solve for x
    x = 19,063,795,975.43/154,146.66
  6. Step 6: Final answer
    x = 123,673.10

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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.