Home / 131,385.03-181,300.92-85,991.13

Finding the Fourth Proportional to 131,385.03, 181,300.92 and 85,991.13

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Solution

The fourth proportional to 131,385.03, 181,300.92 and 85,991.13 is: 118,660.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,385.03 : 181,300.92 = 85,991.13 : x
  2. Step 2: Convert to fraction form
    131,385.03/181,300.92 = 85,991.13/x
  3. Step 3: Cross multiply
    131,385.03x = 181,300.92 × 85,991.13
  4. Step 4: Simplify right side
    131,385.03x = 15,590,270,980.84
  5. Step 5: Solve for x
    x = 15,590,270,980.84/131,385.03
  6. Step 6: Final answer
    x = 118,660.94

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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.