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Finding the Fourth Proportional to 138,794.31, 208,186.98 and 58,810.91

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Solution

The fourth proportional to 138,794.31, 208,186.98 and 58,810.91 is: 88,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,794.31 : 208,186.98 = 58,810.91 : x
  2. Step 2: Convert to fraction form
    138,794.31/208,186.98 = 58,810.91/x
  3. Step 3: Cross multiply
    138,794.31x = 208,186.98 × 58,810.91
  4. Step 4: Simplify right side
    138,794.31x = 12,243,664,703.02
  5. Step 5: Solve for x
    x = 12,243,664,703.02/138,794.31
  6. Step 6: Final answer
    x = 88,214.46

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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.