Home / 142,872.63-214,253.40-76,276.38

Finding the Fourth Proportional to 142,872.63, 214,253.40 and 76,276.38

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Solution

The fourth proportional to 142,872.63, 214,253.40 and 76,276.38 is: 114,384.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,872.63 : 214,253.40 = 76,276.38 : x
  2. Step 2: Convert to fraction form
    142,872.63/214,253.40 = 76,276.38/x
  3. Step 3: Cross multiply
    142,872.63x = 214,253.40 × 76,276.38
  4. Step 4: Simplify right side
    142,872.63x = 16,342,473,754.69
  5. Step 5: Solve for x
    x = 16,342,473,754.69/142,872.63
  6. Step 6: Final answer
    x = 114,384.92

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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.