Home / 120,141.54-180,100.80-56,991.29

Finding the Fourth Proportional to 120,141.54, 180,100.80 and 56,991.29

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Solution

The fourth proportional to 120,141.54, 180,100.80 and 56,991.29 is: 85,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,141.54 : 180,100.80 = 56,991.29 : x
  2. Step 2: Convert to fraction form
    120,141.54/180,100.80 = 56,991.29/x
  3. Step 3: Cross multiply
    120,141.54x = 180,100.80 × 56,991.29
  4. Step 4: Simplify right side
    120,141.54x = 10,264,176,021.53
  5. Step 5: Solve for x
    x = 10,264,176,021.53/120,141.54
  6. Step 6: Final answer
    x = 85,434.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.