Home / 153,915.08-212,401.14-86,845.64

Finding the Fourth Proportional to 153,915.08, 212,401.14 and 86,845.64

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Solution

The fourth proportional to 153,915.08, 212,401.14 and 86,845.64 is: 119,846.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,915.08 : 212,401.14 = 86,845.64 : x
  2. Step 2: Convert to fraction form
    153,915.08/212,401.14 = 86,845.64/x
  3. Step 3: Cross multiply
    153,915.08x = 212,401.14 × 86,845.64
  4. Step 4: Simplify right side
    153,915.08x = 18,446,112,940.03
  5. Step 5: Solve for x
    x = 18,446,112,940.03/153,915.08
  6. Step 6: Final answer
    x = 119,846.04

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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.