Home / 136,743.25-188,715.15-76,325.65

Finding the Fourth Proportional to 136,743.25, 188,715.15 and 76,325.65

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Solution

The fourth proportional to 136,743.25, 188,715.15 and 76,325.65 is: 105,334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,743.25 : 188,715.15 = 76,325.65 : x
  2. Step 2: Convert to fraction form
    136,743.25/188,715.15 = 76,325.65/x
  3. Step 3: Cross multiply
    136,743.25x = 188,715.15 × 76,325.65
  4. Step 4: Simplify right side
    136,743.25x = 14,403,806,488.60
  5. Step 5: Solve for x
    x = 14,403,806,488.60/136,743.25
  6. Step 6: Final answer
    x = 105,334.68

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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.