Home / 136,098.36-187,840.44-78,730.92

Finding the Fourth Proportional to 136,098.36, 187,840.44 and 78,730.92

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Solution

The fourth proportional to 136,098.36, 187,840.44 and 78,730.92 is: 108,662.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,098.36 : 187,840.44 = 78,730.92 : x
  2. Step 2: Convert to fraction form
    136,098.36/187,840.44 = 78,730.92/x
  3. Step 3: Cross multiply
    136,098.36x = 187,840.44 × 78,730.92
  4. Step 4: Simplify right side
    136,098.36x = 14,788,850,654.40
  5. Step 5: Solve for x
    x = 14,788,850,654.40/136,098.36
  6. Step 6: Final answer
    x = 108,662.96

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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.