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Finding the Fourth Proportional to 136,219.93, 187,992.49 and 75,790.70

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Solution

The fourth proportional to 136,219.93, 187,992.49 and 75,790.70 is: 104,596.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,219.93 : 187,992.49 = 75,790.70 : x
  2. Step 2: Convert to fraction form
    136,219.93/187,992.49 = 75,790.70/x
  3. Step 3: Cross multiply
    136,219.93x = 187,992.49 × 75,790.70
  4. Step 4: Simplify right side
    136,219.93x = 14,248,082,199.61
  5. Step 5: Solve for x
    x = 14,248,082,199.61/136,219.93
  6. Step 6: Final answer
    x = 104,596.16

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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.