Home / 136,541.34-188,399.25-79,941.78

Finding the Fourth Proportional to 136,541.34, 188,399.25 and 79,941.78

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Solution

The fourth proportional to 136,541.34, 188,399.25 and 79,941.78 is: 110,303.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,541.34 : 188,399.25 = 79,941.78 : x
  2. Step 2: Convert to fraction form
    136,541.34/188,399.25 = 79,941.78/x
  3. Step 3: Cross multiply
    136,541.34x = 188,399.25 × 79,941.78
  4. Step 4: Simplify right side
    136,541.34x = 15,060,971,395.67
  5. Step 5: Solve for x
    x = 15,060,971,395.67/136,541.34
  6. Step 6: Final answer
    x = 110,303.38

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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.