Home / 142,874.64-214,256.40-76,278.38

Finding the Fourth Proportional to 142,874.64, 214,256.40 and 76,278.38

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Solution

The fourth proportional to 142,874.64, 214,256.40 and 76,278.38 is: 114,387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,874.64 : 214,256.40 = 76,278.38 : x
  2. Step 2: Convert to fraction form
    142,874.64/214,256.40 = 76,278.38/x
  3. Step 3: Cross multiply
    142,874.64x = 214,256.40 × 76,278.38
  4. Step 4: Simplify right side
    142,874.64x = 16,343,131,096.63
  5. Step 5: Solve for x
    x = 16,343,131,096.63/142,874.64
  6. Step 6: Final answer
    x = 114,387.91

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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.