Home / 153,664.78-212,036.52-85,673.38

Finding the Fourth Proportional to 153,664.78, 212,036.52 and 85,673.38

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Solution

The fourth proportional to 153,664.78, 212,036.52 and 85,673.38 is: 118,217.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,664.78 : 212,036.52 = 85,673.38 : x
  2. Step 2: Convert to fraction form
    153,664.78/212,036.52 = 85,673.38/x
  3. Step 3: Cross multiply
    153,664.78x = 212,036.52 × 85,673.38
  4. Step 4: Simplify right side
    153,664.78x = 18,165,885,351.84
  5. Step 5: Solve for x
    x = 18,165,885,351.84/153,664.78
  6. Step 6: Final answer
    x = 118,217.63

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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.