Home / 158,729.88-219,051.50-87,112.45

Finding the Fourth Proportional to 158,729.88, 219,051.50 and 87,112.45

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Solution

The fourth proportional to 158,729.88, 219,051.50 and 87,112.45 is: 120,217.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,729.88 : 219,051.50 = 87,112.45 : x
  2. Step 2: Convert to fraction form
    158,729.88/219,051.50 = 87,112.45/x
  3. Step 3: Cross multiply
    158,729.88x = 219,051.50 × 87,112.45
  4. Step 4: Simplify right side
    158,729.88x = 19,082,112,841.18
  5. Step 5: Solve for x
    x = 19,082,112,841.18/158,729.88
  6. Step 6: Final answer
    x = 120,217.52

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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.