Home / 136,715.20-205,072.80-103,500.14

Finding the Fourth Proportional to 136,715.20, 205,072.80 and 103,500.14

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Solution

The fourth proportional to 136,715.20, 205,072.80 and 103,500.14 is: 155,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,715.20 : 205,072.80 = 103,500.14 : x
  2. Step 2: Convert to fraction form
    136,715.20/205,072.80 = 103,500.14/x
  3. Step 3: Cross multiply
    136,715.20x = 205,072.80 × 103,500.14
  4. Step 4: Simplify right side
    136,715.20x = 21,225,062,997.51
  5. Step 5: Solve for x
    x = 21,225,062,997.51/136,715.20
  6. Step 6: Final answer
    x = 155,250.21

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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.