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Finding the Fourth Proportional to 111,143.66, 166,722.91 and 39,087.93

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Solution

The fourth proportional to 111,143.66, 166,722.91 and 39,087.93 is: 58,634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,143.66 : 166,722.91 = 39,087.93 : x
  2. Step 2: Convert to fraction form
    111,143.66/166,722.91 = 39,087.93/x
  3. Step 3: Cross multiply
    111,143.66x = 166,722.91 × 39,087.93
  4. Step 4: Simplify right side
    111,143.66x = 6,516,852,666.18
  5. Step 5: Solve for x
    x = 6,516,852,666.18/111,143.66
  6. Step 6: Final answer
    x = 58,634.50

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1.5x scale

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.