Home / 153,833.85-212,301.36-85,864.05

Finding the Fourth Proportional to 153,833.85, 212,301.36 and 85,864.05

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Solution

The fourth proportional to 153,833.85, 212,301.36 and 85,864.05 is: 118,498.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,833.85 : 212,301.36 = 85,864.05 : x
  2. Step 2: Convert to fraction form
    153,833.85/212,301.36 = 85,864.05/x
  3. Step 3: Cross multiply
    153,833.85x = 212,301.36 × 85,864.05
  4. Step 4: Simplify right side
    153,833.85x = 18,229,053,099.28
  5. Step 5: Solve for x
    x = 18,229,053,099.28/153,833.85
  6. Step 6: Final answer
    x = 118,498.33

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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.