Home / 131,666.40-181,641.60-83,908.80

Finding the Fourth Proportional to 131,666.40, 181,641.60 and 83,908.80

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Solution

The fourth proportional to 131,666.40, 181,641.60 and 83,908.80 is: 115,757.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,666.40 : 181,641.60 = 83,908.80 : x
  2. Step 2: Convert to fraction form
    131,666.40/181,641.60 = 83,908.80/x
  3. Step 3: Cross multiply
    131,666.40x = 181,641.60 × 83,908.80
  4. Step 4: Simplify right side
    131,666.40x = 15,241,328,686.08
  5. Step 5: Solve for x
    x = 15,241,328,686.08/131,666.40
  6. Step 6: Final answer
    x = 115,757.16

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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.