Home / 111,837.59-154,285.02-66,489.84

Finding the Fourth Proportional to 111,837.59, 154,285.02 and 66,489.84

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Solution

The fourth proportional to 111,837.59, 154,285.02 and 66,489.84 is: 91,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,837.59 : 154,285.02 = 66,489.84 : x
  2. Step 2: Convert to fraction form
    111,837.59/154,285.02 = 66,489.84/x
  3. Step 3: Cross multiply
    111,837.59x = 154,285.02 × 66,489.84
  4. Step 4: Simplify right side
    111,837.59x = 10,258,386,294.20
  5. Step 5: Solve for x
    x = 10,258,386,294.20/111,837.59
  6. Step 6: Final answer
    x = 91,725.75

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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.