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Finding the Fourth Proportional to 139,963.22, 210,026.14 and 58,904.28

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Solution

The fourth proportional to 139,963.22, 210,026.14 and 58,904.28 is: 88,390.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,963.22 : 210,026.14 = 58,904.28 : x
  2. Step 2: Convert to fraction form
    139,963.22/210,026.14 = 58,904.28/x
  3. Step 3: Cross multiply
    139,963.22x = 210,026.14 × 58,904.28
  4. Step 4: Simplify right side
    139,963.22x = 12,371,438,557.88
  5. Step 5: Solve for x
    x = 12,371,438,557.88/139,963.22
  6. Step 6: Final answer
    x = 88,390.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.