Home / 136,099.54-187,817.43-78,746.68

Finding the Fourth Proportional to 136,099.54, 187,817.43 and 78,746.68

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Solution

The fourth proportional to 136,099.54, 187,817.43 and 78,746.68 is: 108,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,099.54 : 187,817.43 = 78,746.68 : x
  2. Step 2: Convert to fraction form
    136,099.54/187,817.43 = 78,746.68/x
  3. Step 3: Cross multiply
    136,099.54x = 187,817.43 × 78,746.68
  4. Step 4: Simplify right side
    136,099.54x = 14,789,999,058.63
  5. Step 5: Solve for x
    x = 14,789,999,058.63/136,099.54
  6. Step 6: Final answer
    x = 108,670.46

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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.