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Finding the Fourth Proportional to 136,174.32, 187,920.56 and 76,558.32

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Solution

The fourth proportional to 136,174.32, 187,920.56 and 76,558.32 is: 105,650.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,174.32 : 187,920.56 = 76,558.32 : x
  2. Step 2: Convert to fraction form
    136,174.32/187,920.56 = 76,558.32/x
  3. Step 3: Cross multiply
    136,174.32x = 187,920.56 × 76,558.32
  4. Step 4: Simplify right side
    136,174.32x = 14,386,881,984.27
  5. Step 5: Solve for x
    x = 14,386,881,984.27/136,174.32
  6. Step 6: Final answer
    x = 105,650.48

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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.