Home / 128,730.47-192,844.29-61,166.34

Finding the Fourth Proportional to 128,730.47, 192,844.29 and 61,166.34

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Solution

The fourth proportional to 128,730.47, 192,844.29 and 61,166.34 is: 91,630.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,730.47 : 192,844.29 = 61,166.34 : x
  2. Step 2: Convert to fraction form
    128,730.47/192,844.29 = 61,166.34/x
  3. Step 3: Cross multiply
    128,730.47x = 192,844.29 × 61,166.34
  4. Step 4: Simplify right side
    128,730.47x = 11,795,579,409.20
  5. Step 5: Solve for x
    x = 11,795,579,409.20/128,730.47
  6. Step 6: Final answer
    x = 91,630.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.