Home / 119,900.86-165,423.89-85,451.02

Finding the Fourth Proportional to 119,900.86, 165,423.89 and 85,451.02

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Solution

The fourth proportional to 119,900.86, 165,423.89 and 85,451.02 is: 117,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,900.86 : 165,423.89 = 85,451.02 : x
  2. Step 2: Convert to fraction form
    119,900.86/165,423.89 = 85,451.02/x
  3. Step 3: Cross multiply
    119,900.86x = 165,423.89 × 85,451.02
  4. Step 4: Simplify right side
    119,900.86x = 14,135,640,132.87
  5. Step 5: Solve for x
    x = 14,135,640,132.87/119,900.86
  6. Step 6: Final answer
    x = 117,894.40

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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.