Home / 99,983.70-137,981.67-57,542.34

Finding the Fourth Proportional to 99,983.70, 137,981.67 and 57,542.34

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Solution

The fourth proportional to 99,983.70, 137,981.67 and 57,542.34 is: 79,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,983.70 : 137,981.67 = 57,542.34 : x
  2. Step 2: Convert to fraction form
    99,983.70/137,981.67 = 57,542.34/x
  3. Step 3: Cross multiply
    99,983.70x = 137,981.67 × 57,542.34
  4. Step 4: Simplify right side
    99,983.70x = 7,939,788,168.91
  5. Step 5: Solve for x
    x = 7,939,788,168.91/99,983.70
  6. Step 6: Final answer
    x = 79,410.83

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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.