Home / 99,378.65-137,166.89-56,383.31

Finding the Fourth Proportional to 99,378.65, 137,166.89 and 56,383.31

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Solution

The fourth proportional to 99,378.65, 137,166.89 and 56,383.31 is: 77,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,378.65 : 137,166.89 = 56,383.31 : x
  2. Step 2: Convert to fraction form
    99,378.65/137,166.89 = 56,383.31/x
  3. Step 3: Cross multiply
    99,378.65x = 137,166.89 × 56,383.31
  4. Step 4: Simplify right side
    99,378.65x = 7,733,922,312.85
  5. Step 5: Solve for x
    x = 7,733,922,312.85/99,378.65
  6. Step 6: Final answer
    x = 77,822.78

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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.