Home / 142,785.02-197,044.98-79,123.88

Finding the Fourth Proportional to 142,785.02, 197,044.98 and 79,123.88

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Solution

The fourth proportional to 142,785.02, 197,044.98 and 79,123.88 is: 109,191.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,785.02 : 197,044.98 = 79,123.88 : x
  2. Step 2: Convert to fraction form
    142,785.02/197,044.98 = 79,123.88/x
  3. Step 3: Cross multiply
    142,785.02x = 197,044.98 × 79,123.88
  4. Step 4: Simplify right side
    142,785.02x = 15,590,963,352.12
  5. Step 5: Solve for x
    x = 15,590,963,352.12/142,785.02
  6. Step 6: Final answer
    x = 109,191.87

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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.