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Finding the Fourth Proportional to 101,158.47, 139,598.70 and 55,836.47

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Solution

The fourth proportional to 101,158.47, 139,598.70 and 55,836.47 is: 77,054.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,158.47 : 139,598.70 = 55,836.47 : x
  2. Step 2: Convert to fraction form
    101,158.47/139,598.70 = 55,836.47/x
  3. Step 3: Cross multiply
    101,158.47x = 139,598.70 × 55,836.47
  4. Step 4: Simplify right side
    101,158.47x = 7,794,698,764.18
  5. Step 5: Solve for x
    x = 7,794,698,764.18/101,158.47
  6. Step 6: Final answer
    x = 77,054.34

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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.