Home / 136,968.42-189,074.58-83,270.58

Finding the Fourth Proportional to 136,968.42, 189,074.58 and 83,270.58

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Solution

The fourth proportional to 136,968.42, 189,074.58 and 83,270.58 is: 114,948.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,968.42 : 189,074.58 = 83,270.58 : x
  2. Step 2: Convert to fraction form
    136,968.42/189,074.58 = 83,270.58/x
  3. Step 3: Cross multiply
    136,968.42x = 189,074.58 × 83,270.58
  4. Step 4: Simplify right side
    136,968.42x = 15,744,349,939.86
  5. Step 5: Solve for x
    x = 15,744,349,939.86/136,968.42
  6. Step 6: Final answer
    x = 114,948.76

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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.