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Finding the Fourth Proportional to 101,271.76, 139,750.80 and 58,247.98

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Solution

The fourth proportional to 101,271.76, 139,750.80 and 58,247.98 is: 80,379.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,271.76 : 139,750.80 = 58,247.98 : x
  2. Step 2: Convert to fraction form
    101,271.76/139,750.80 = 58,247.98/x
  3. Step 3: Cross multiply
    101,271.76x = 139,750.80 × 58,247.98
  4. Step 4: Simplify right side
    101,271.76x = 8,140,201,803.38
  5. Step 5: Solve for x
    x = 8,140,201,803.38/101,271.76
  6. Step 6: Final answer
    x = 80,379.78

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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.