Home / 138,729.03-208,093.55-58,779.60

Finding the Fourth Proportional to 138,729.03, 208,093.55 and 58,779.60

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Solution

The fourth proportional to 138,729.03, 208,093.55 and 58,779.60 is: 88,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,729.03 : 208,093.55 = 58,779.60 : x
  2. Step 2: Convert to fraction form
    138,729.03/208,093.55 = 58,779.60/x
  3. Step 3: Cross multiply
    138,729.03x = 208,093.55 × 58,779.60
  4. Step 4: Simplify right side
    138,729.03x = 12,231,655,631.58
  5. Step 5: Solve for x
    x = 12,231,655,631.58/138,729.03
  6. Step 6: Final answer
    x = 88,169.40

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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.