Home / 154,218.72-212,810.14-93,780.96

Finding the Fourth Proportional to 154,218.72, 212,810.14 and 93,780.96

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Solution

The fourth proportional to 154,218.72, 212,810.14 and 93,780.96 is: 129,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,218.72 : 212,810.14 = 93,780.96 : x
  2. Step 2: Convert to fraction form
    154,218.72/212,810.14 = 93,780.96/x
  3. Step 3: Cross multiply
    154,218.72x = 212,810.14 × 93,780.96
  4. Step 4: Simplify right side
    154,218.72x = 19,957,539,226.93
  5. Step 5: Solve for x
    x = 19,957,539,226.93/154,218.72
  6. Step 6: Final answer
    x = 129,410.61

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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.