Home / 99,864.81-137,800.98-56,849.85

Finding the Fourth Proportional to 99,864.81, 137,800.98 and 56,849.85

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Solution

The fourth proportional to 99,864.81, 137,800.98 and 56,849.85 is: 78,445.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,864.81 : 137,800.98 = 56,849.85 : x
  2. Step 2: Convert to fraction form
    99,864.81/137,800.98 = 56,849.85/x
  3. Step 3: Cross multiply
    99,864.81x = 137,800.98 × 56,849.85
  4. Step 4: Simplify right side
    99,864.81x = 7,833,965,042.85
  5. Step 5: Solve for x
    x = 7,833,965,042.85/99,864.81
  6. Step 6: Final answer
    x = 78,445.70

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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.