Home / 187,987.86-281,999.64-68,075.10

Finding the Fourth Proportional to 187,987.86, 281,999.64 and 68,075.10

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Solution

The fourth proportional to 187,987.86, 281,999.64 and 68,075.10 is: 102,119.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,987.86 : 281,999.64 = 68,075.10 : x
  2. Step 2: Convert to fraction form
    187,987.86/281,999.64 = 68,075.10/x
  3. Step 3: Cross multiply
    187,987.86x = 281,999.64 × 68,075.10
  4. Step 4: Simplify right side
    187,987.86x = 19,197,153,692.96
  5. Step 5: Solve for x
    x = 19,197,153,692.96/187,987.86
  6. Step 6: Final answer
    x = 102,119.11

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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.