Home / 99,372.18-137,133.51-56,930.88

Finding the Fourth Proportional to 99,372.18, 137,133.51 and 56,930.88

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Solution

The fourth proportional to 99,372.18, 137,133.51 and 56,930.88 is: 78,564.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,372.18 : 137,133.51 = 56,930.88 : x
  2. Step 2: Convert to fraction form
    99,372.18/137,133.51 = 56,930.88/x
  3. Step 3: Cross multiply
    99,372.18x = 137,133.51 × 56,930.88
  4. Step 4: Simplify right side
    99,372.18x = 7,807,131,401.79
  5. Step 5: Solve for x
    x = 7,807,131,401.79/99,372.18
  6. Step 6: Final answer
    x = 78,564.56

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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.