Home / 99,813.01-137,740.15-56,791.57

Finding the Fourth Proportional to 99,813.01, 137,740.15 and 56,791.57

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Solution

The fourth proportional to 99,813.01, 137,740.15 and 56,791.57 is: 78,371.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,813.01 : 137,740.15 = 56,791.57 : x
  2. Step 2: Convert to fraction form
    99,813.01/137,740.15 = 56,791.57/x
  3. Step 3: Cross multiply
    99,813.01x = 137,740.15 × 56,791.57
  4. Step 4: Simplify right side
    99,813.01x = 7,822,478,842.29
  5. Step 5: Solve for x
    x = 7,822,478,842.29/99,813.01
  6. Step 6: Final answer
    x = 78,371.34

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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.