Home / 157,877.23-217,859.20-86,242.05

Finding the Fourth Proportional to 157,877.23, 217,859.20 and 86,242.05

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Solution

The fourth proportional to 157,877.23, 217,859.20 and 86,242.05 is: 119,007.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,877.23 : 217,859.20 = 86,242.05 : x
  2. Step 2: Convert to fraction form
    157,877.23/217,859.20 = 86,242.05/x
  3. Step 3: Cross multiply
    157,877.23x = 217,859.20 × 86,242.05
  4. Step 4: Simplify right side
    157,877.23x = 18,788,624,019.36
  5. Step 5: Solve for x
    x = 18,788,624,019.36/157,877.23
  6. Step 6: Final answer
    x = 119,007.81

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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.