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Finding the Fourth Proportional to 136,391.95, 188,213.49 and 75,126.22

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Solution

The fourth proportional to 136,391.95, 188,213.49 and 75,126.22 is: 103,670.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,391.95 : 188,213.49 = 75,126.22 : x
  2. Step 2: Convert to fraction form
    136,391.95/188,213.49 = 75,126.22/x
  3. Step 3: Cross multiply
    136,391.95x = 188,213.49 × 75,126.22
  4. Step 4: Simplify right side
    136,391.95x = 14,139,768,056.71
  5. Step 5: Solve for x
    x = 14,139,768,056.71/136,391.95
  6. Step 6: Final answer
    x = 103,670.11

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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.