Home / 139,964.10-193,146.60-76,301.88

Finding the Fourth Proportional to 139,964.10, 193,146.60 and 76,301.88

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Solution

The fourth proportional to 139,964.10, 193,146.60 and 76,301.88 is: 105,294.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,964.10 : 193,146.60 = 76,301.88 : x
  2. Step 2: Convert to fraction form
    139,964.10/193,146.60 = 76,301.88/x
  3. Step 3: Cross multiply
    139,964.10x = 193,146.60 × 76,301.88
  4. Step 4: Simplify right side
    139,964.10x = 14,737,448,695.61
  5. Step 5: Solve for x
    x = 14,737,448,695.61/139,964.10
  6. Step 6: Final answer
    x = 105,294.49

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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.