Home / 154,693.56-213,490.17-86,709.45

Finding the Fourth Proportional to 154,693.56, 213,490.17 and 86,709.45

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Solution

The fourth proportional to 154,693.56, 213,490.17 and 86,709.45 is: 119,666.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,693.56 : 213,490.17 = 86,709.45 : x
  2. Step 2: Convert to fraction form
    154,693.56/213,490.17 = 86,709.45/x
  3. Step 3: Cross multiply
    154,693.56x = 213,490.17 × 86,709.45
  4. Step 4: Simplify right side
    154,693.56x = 18,511,615,221.11
  5. Step 5: Solve for x
    x = 18,511,615,221.11/154,693.56
  6. Step 6: Final answer
    x = 119,666.36

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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.