Home / 99,077.85-136,513.08-67,191.39

Finding the Fourth Proportional to 99,077.85, 136,513.08 and 67,191.39

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Solution

The fourth proportional to 99,077.85, 136,513.08 and 67,191.39 is: 92,578.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,077.85 : 136,513.08 = 67,191.39 : x
  2. Step 2: Convert to fraction form
    99,077.85/136,513.08 = 67,191.39/x
  3. Step 3: Cross multiply
    99,077.85x = 136,513.08 × 67,191.39
  4. Step 4: Simplify right side
    99,077.85x = 9,172,503,598.38
  5. Step 5: Solve for x
    x = 9,172,503,598.38/99,077.85
  6. Step 6: Final answer
    x = 92,578.75

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1.5x scale

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.