Home / 136,428.75-188,264.36-75,173.04

Finding the Fourth Proportional to 136,428.75, 188,264.36 and 75,173.04

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Solution

The fourth proportional to 136,428.75, 188,264.36 and 75,173.04 is: 103,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,428.75 : 188,264.36 = 75,173.04 : x
  2. Step 2: Convert to fraction form
    136,428.75/188,264.36 = 75,173.04/x
  3. Step 3: Cross multiply
    136,428.75x = 188,264.36 × 75,173.04
  4. Step 4: Simplify right side
    136,428.75x = 14,152,403,888.99
  5. Step 5: Solve for x
    x = 14,152,403,888.99/136,428.75
  6. Step 6: Final answer
    x = 103,734.76

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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.