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Finding the Fourth Proportional to 101,175, 139,623.74 and 55,852.88

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Solution

The fourth proportional to 101,175, 139,623.74 and 55,852.88 is: 77,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,175 : 139,623.74 = 55,852.88 : x
  2. Step 2: Convert to fraction form
    101,175/139,623.74 = 55,852.88/x
  3. Step 3: Cross multiply
    101,175x = 139,623.74 × 55,852.88
  4. Step 4: Simplify right side
    101,175x = 7,798,387,017.99
  5. Step 5: Solve for x
    x = 7,798,387,017.99/101,175
  6. Step 6: Final answer
    x = 77,078.20

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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.