Home / 157,815.81-217,777.82-86,182.11

Finding the Fourth Proportional to 157,815.81, 217,777.82 and 86,182.11

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Solution

The fourth proportional to 157,815.81, 217,777.82 and 86,182.11 is: 118,926.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,815.81 : 217,777.82 = 86,182.11 : x
  2. Step 2: Convert to fraction form
    157,815.81/217,777.82 = 86,182.11/x
  3. Step 3: Cross multiply
    157,815.81x = 217,777.82 × 86,182.11
  4. Step 4: Simplify right side
    157,815.81x = 18,768,551,607.89
  5. Step 5: Solve for x
    x = 18,768,551,607.89/157,815.81
  6. Step 6: Final answer
    x = 118,926.94

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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.