Home / 139,905.97-193,064.60-76,242.40

Finding the Fourth Proportional to 139,905.97, 193,064.60 and 76,242.40

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Solution

The fourth proportional to 139,905.97, 193,064.60 and 76,242.40 is: 105,211.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,905.97 : 193,064.60 = 76,242.40 : x
  2. Step 2: Convert to fraction form
    139,905.97/193,064.60 = 76,242.40/x
  3. Step 3: Cross multiply
    139,905.97x = 193,064.60 × 76,242.40
  4. Step 4: Simplify right side
    139,905.97x = 14,719,708,166.98
  5. Step 5: Solve for x
    x = 14,719,708,166.98/139,905.97
  6. Step 6: Final answer
    x = 105,211.44

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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.