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Finding the Fourth Proportional to 101,323.89, 139,834.21 and 56,000.90

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Solution

The fourth proportional to 101,323.89, 139,834.21 and 56,000.90 is: 77,285.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,323.89 : 139,834.21 = 56,000.90 : x
  2. Step 2: Convert to fraction form
    101,323.89/139,834.21 = 56,000.90/x
  3. Step 3: Cross multiply
    101,323.89x = 139,834.21 × 56,000.90
  4. Step 4: Simplify right side
    101,323.89x = 7,830,841,033.80
  5. Step 5: Solve for x
    x = 7,830,841,033.80/101,323.89
  6. Step 6: Final answer
    x = 77,285.24

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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.