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Finding the Fourth Proportional to 117,139.73, 175,708.04 and 28,394.01

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Solution

The fourth proportional to 117,139.73, 175,708.04 and 28,394.01 is: 42,590.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,139.73 : 175,708.04 = 28,394.01 : x
  2. Step 2: Convert to fraction form
    117,139.73/175,708.04 = 28,394.01/x
  3. Step 3: Cross multiply
    117,139.73x = 175,708.04 × 28,394.01
  4. Step 4: Simplify right side
    117,139.73x = 4,989,055,702.87
  5. Step 5: Solve for x
    x = 4,989,055,702.87/117,139.73
  6. Step 6: Final answer
    x = 42,590.64

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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.