Home / 142,784.85-197,044.26-79,123.71

Finding the Fourth Proportional to 142,784.85, 197,044.26 and 79,123.71

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Solution

The fourth proportional to 142,784.85, 197,044.26 and 79,123.71 is: 109,191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,784.85 : 197,044.26 = 79,123.71 : x
  2. Step 2: Convert to fraction form
    142,784.85/197,044.26 = 79,123.71/x
  3. Step 3: Cross multiply
    142,784.85x = 197,044.26 × 79,123.71
  4. Step 4: Simplify right side
    142,784.85x = 15,590,872,885.40
  5. Step 5: Solve for x
    x = 15,590,872,885.40/142,784.85
  6. Step 6: Final answer
    x = 109,191.37

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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.