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Finding the Fourth Proportional to 136,242.32, 187,992.72 and 75,812.77

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Solution

The fourth proportional to 136,242.32, 187,992.72 and 75,812.77 is: 104,609.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,242.32 : 187,992.72 = 75,812.77 : x
  2. Step 2: Convert to fraction form
    136,242.32/187,992.72 = 75,812.77/x
  3. Step 3: Cross multiply
    136,242.32x = 187,992.72 × 75,812.77
  4. Step 4: Simplify right side
    136,242.32x = 14,252,248,373.05
  5. Step 5: Solve for x
    x = 14,252,248,373.05/136,242.32
  6. Step 6: Final answer
    x = 104,609.56

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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.