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Finding the Fourth Proportional to 101,151.88, 139,590 and 55,830.25

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Solution

The fourth proportional to 101,151.88, 139,590 and 55,830.25 is: 77,045.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,151.88 : 139,590 = 55,830.25 : x
  2. Step 2: Convert to fraction form
    101,151.88/139,590 = 55,830.25/x
  3. Step 3: Cross multiply
    101,151.88x = 139,590 × 55,830.25
  4. Step 4: Simplify right side
    101,151.88x = 7,793,344,597.50
  5. Step 5: Solve for x
    x = 7,793,344,597.50/101,151.88
  6. Step 6: Final answer
    x = 77,045.97

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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.