Home / 142,784.70-197,044.47-79,123.74

Finding the Fourth Proportional to 142,784.70, 197,044.47 and 79,123.74

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Solution

The fourth proportional to 142,784.70, 197,044.47 and 79,123.74 is: 109,191.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,784.70 : 197,044.47 = 79,123.74 : x
  2. Step 2: Convert to fraction form
    142,784.70/197,044.47 = 79,123.74/x
  3. Step 3: Cross multiply
    142,784.70x = 197,044.47 × 79,123.74
  4. Step 4: Simplify right side
    142,784.70x = 15,590,895,412.72
  5. Step 5: Solve for x
    x = 15,590,895,412.72/142,784.70
  6. Step 6: Final answer
    x = 109,191.64

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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.