Home / 178,176.40-245,825.60-121,489.36

Finding the Fourth Proportional to 178,176.40, 245,825.60 and 121,489.36

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Solution

The fourth proportional to 178,176.40, 245,825.60 and 121,489.36 is: 167,615.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,176.40 : 245,825.60 = 121,489.36 : x
  2. Step 2: Convert to fraction form
    178,176.40/245,825.60 = 121,489.36/x
  3. Step 3: Cross multiply
    178,176.40x = 245,825.60 × 121,489.36
  4. Step 4: Simplify right side
    178,176.40x = 29,865,194,815.62
  5. Step 5: Solve for x
    x = 29,865,194,815.62/178,176.40
  6. Step 6: Final answer
    x = 167,615.88

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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.