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Finding the Fourth Proportional to 131,610, 181,626.12 and 71,994

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Solution

The fourth proportional to 131,610, 181,626.12 and 71,994 is: 99,354.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,610 : 181,626.12 = 71,994 : x
  2. Step 2: Convert to fraction form
    131,610/181,626.12 = 71,994/x
  3. Step 3: Cross multiply
    131,610x = 181,626.12 × 71,994
  4. Step 4: Simplify right side
    131,610x = 13,075,990,883.28
  5. Step 5: Solve for x
    x = 13,075,990,883.28/131,610
  6. Step 6: Final answer
    x = 99,354.08

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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.