Home / 99,389.97-137,208.96-76,677.98

Finding the Fourth Proportional to 99,389.97, 137,208.96 and 76,677.98

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Solution

The fourth proportional to 99,389.97, 137,208.96 and 76,677.98 is: 105,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,389.97 : 137,208.96 = 76,677.98 : x
  2. Step 2: Convert to fraction form
    99,389.97/137,208.96 = 76,677.98/x
  3. Step 3: Cross multiply
    99,389.97x = 137,208.96 × 76,677.98
  4. Step 4: Simplify right side
    99,389.97x = 10,520,905,204.66
  5. Step 5: Solve for x
    x = 10,520,905,204.66/99,389.97
  6. Step 6: Final answer
    x = 105,854.80

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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.