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Finding the Fourth Proportional to 86,130.88, 129,187.98 and 26,159.90

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Solution

The fourth proportional to 86,130.88, 129,187.98 and 26,159.90 is: 39,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,130.88 : 129,187.98 = 26,159.90 : x
  2. Step 2: Convert to fraction form
    86,130.88/129,187.98 = 26,159.90/x
  3. Step 3: Cross multiply
    86,130.88x = 129,187.98 × 26,159.90
  4. Step 4: Simplify right side
    86,130.88x = 3,379,543,992.06
  5. Step 5: Solve for x
    x = 3,379,543,992.06/86,130.88
  6. Step 6: Final answer
    x = 39,237.31

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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.