Home / 157,840.04-217,815.63-86,220.38

Finding the Fourth Proportional to 157,840.04, 217,815.63 and 86,220.38

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Solution

The fourth proportional to 157,840.04, 217,815.63 and 86,220.38 is: 118,982.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,840.04 : 217,815.63 = 86,220.38 : x
  2. Step 2: Convert to fraction form
    157,840.04/217,815.63 = 86,220.38/x
  3. Step 3: Cross multiply
    157,840.04x = 217,815.63 × 86,220.38
  4. Step 4: Simplify right side
    157,840.04x = 18,780,146,388.54
  5. Step 5: Solve for x
    x = 18,780,146,388.54/157,840.04
  6. Step 6: Final answer
    x = 118,982.14

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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.