Home / 157,982.34-218,015.65-86,362.89

Finding the Fourth Proportional to 157,982.34, 218,015.65 and 86,362.89

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Solution

The fourth proportional to 157,982.34, 218,015.65 and 86,362.89 is: 119,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,982.34 : 218,015.65 = 86,362.89 : x
  2. Step 2: Convert to fraction form
    157,982.34/218,015.65 = 86,362.89/x
  3. Step 3: Cross multiply
    157,982.34x = 218,015.65 × 86,362.89
  4. Step 4: Simplify right side
    157,982.34x = 18,828,460,889.62
  5. Step 5: Solve for x
    x = 18,828,460,889.62/157,982.34
  6. Step 6: Final answer
    x = 119,180.79

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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.