Home / 154,308.40-212,859.86-89,770.39

Finding the Fourth Proportional to 154,308.40, 212,859.86 and 89,770.39

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Solution

The fourth proportional to 154,308.40, 212,859.86 and 89,770.39 is: 123,833.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,308.40 : 212,859.86 = 89,770.39 : x
  2. Step 2: Convert to fraction form
    154,308.40/212,859.86 = 89,770.39/x
  3. Step 3: Cross multiply
    154,308.40x = 212,859.86 × 89,770.39
  4. Step 4: Simplify right side
    154,308.40x = 19,108,511,666.54
  5. Step 5: Solve for x
    x = 19,108,511,666.54/154,308.40
  6. Step 6: Final answer
    x = 123,833.26

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1.5x scale

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.