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Finding the Fourth Proportional to 212,923.72, 293,760.54 and 136,484.97

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Solution

The fourth proportional to 212,923.72, 293,760.54 and 136,484.97 is: 188,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,923.72 : 293,760.54 = 136,484.97 : x
  2. Step 2: Convert to fraction form
    212,923.72/293,760.54 = 136,484.97/x
  3. Step 3: Cross multiply
    212,923.72x = 293,760.54 × 136,484.97
  4. Step 4: Simplify right side
    212,923.72x = 40,093,896,501.86
  5. Step 5: Solve for x
    x = 40,093,896,501.86/212,923.72
  6. Step 6: Final answer
    x = 188,301.69

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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.