Home / 99,317.19-136,964.89-76,620.39

Finding the Fourth Proportional to 99,317.19, 136,964.89 and 76,620.39

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Solution

The fourth proportional to 99,317.19, 136,964.89 and 76,620.39 is: 105,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,317.19 : 136,964.89 = 76,620.39 : x
  2. Step 2: Convert to fraction form
    99,317.19/136,964.89 = 76,620.39/x
  3. Step 3: Cross multiply
    99,317.19x = 136,964.89 × 76,620.39
  4. Step 4: Simplify right side
    99,317.19x = 10,494,303,288.11
  5. Step 5: Solve for x
    x = 10,494,303,288.11/99,317.19
  6. Step 6: Final answer
    x = 105,664.52

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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.