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Finding the Fourth Proportional to 111,957.36, 154,500.48 and 61,656

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Solution

The fourth proportional to 111,957.36, 154,500.48 and 61,656 is: 85,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,957.36 : 154,500.48 = 61,656 : x
  2. Step 2: Convert to fraction form
    111,957.36/154,500.48 = 61,656/x
  3. Step 3: Cross multiply
    111,957.36x = 154,500.48 × 61,656
  4. Step 4: Simplify right side
    111,957.36x = 9,525,881,594.88
  5. Step 5: Solve for x
    x = 9,525,881,594.88/111,957.36
  6. Step 6: Final answer
    x = 85,084.91

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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.