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Finding the Fourth Proportional to 101,000.55, 139,438.77 and 67,054.86

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Solution

The fourth proportional to 101,000.55, 139,438.77 and 67,054.86 is: 92,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,000.55 : 139,438.77 = 67,054.86 : x
  2. Step 2: Convert to fraction form
    101,000.55/139,438.77 = 67,054.86/x
  3. Step 3: Cross multiply
    101,000.55x = 139,438.77 × 67,054.86
  4. Step 4: Simplify right side
    101,000.55x = 9,350,047,200.92
  5. Step 5: Solve for x
    x = 9,350,047,200.92/101,000.55
  6. Step 6: Final answer
    x = 92,574.22

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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.