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Finding the Fourth Proportional to 101,199.25, 139,656.99 and 55,877.32

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Solution

The fourth proportional to 101,199.25, 139,656.99 and 55,877.32 is: 77,111.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,199.25 : 139,656.99 = 55,877.32 : x
  2. Step 2: Convert to fraction form
    101,199.25/139,656.99 = 55,877.32/x
  3. Step 3: Cross multiply
    101,199.25x = 139,656.99 × 55,877.32
  4. Step 4: Simplify right side
    101,199.25x = 7,803,658,320.47
  5. Step 5: Solve for x
    x = 7,803,658,320.47/101,199.25
  6. Step 6: Final answer
    x = 77,111.82

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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.