Home / 154,342.51-212,996.49-86,358.93

Finding the Fourth Proportional to 154,342.51, 212,996.49 and 86,358.93

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Solution

The fourth proportional to 154,342.51, 212,996.49 and 86,358.93 is: 119,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,342.51 : 212,996.49 = 86,358.93 : x
  2. Step 2: Convert to fraction form
    154,342.51/212,996.49 = 86,358.93/x
  3. Step 3: Cross multiply
    154,342.51x = 212,996.49 × 86,358.93
  4. Step 4: Simplify right side
    154,342.51x = 18,394,149,644.73
  5. Step 5: Solve for x
    x = 18,394,149,644.73/154,342.51
  6. Step 6: Final answer
    x = 119,177.47

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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.