Home / 124,038.87-185,910.66-86,395.12

Finding the Fourth Proportional to 124,038.87, 185,910.66 and 86,395.12

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Solution

The fourth proportional to 124,038.87, 185,910.66 and 86,395.12 is: 129,489.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,038.87 : 185,910.66 = 86,395.12 : x
  2. Step 2: Convert to fraction form
    124,038.87/185,910.66 = 86,395.12/x
  3. Step 3: Cross multiply
    124,038.87x = 185,910.66 × 86,395.12
  4. Step 4: Simplify right side
    124,038.87x = 16,061,773,779.98
  5. Step 5: Solve for x
    x = 16,061,773,779.98/124,038.87
  6. Step 6: Final answer
    x = 129,489.84

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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.