Home / 136,605.65-188,516.40-76,176.11

Finding the Fourth Proportional to 136,605.65, 188,516.40 and 76,176.11

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Solution

The fourth proportional to 136,605.65, 188,516.40 and 76,176.11 is: 105,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,605.65 : 188,516.40 = 76,176.11 : x
  2. Step 2: Convert to fraction form
    136,605.65/188,516.40 = 76,176.11/x
  3. Step 3: Cross multiply
    136,605.65x = 188,516.40 × 76,176.11
  4. Step 4: Simplify right side
    136,605.65x = 14,360,446,023.20
  5. Step 5: Solve for x
    x = 14,360,446,023.20/136,605.65
  6. Step 6: Final answer
    x = 105,123.37

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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.