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Finding the Fourth Proportional to 117,145.60, 175,718.40 and 115,590.40

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Solution

The fourth proportional to 117,145.60, 175,718.40 and 115,590.40 is: 173,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.60 : 175,718.40 = 115,590.40 : x
  2. Step 2: Convert to fraction form
    117,145.60/175,718.40 = 115,590.40/x
  3. Step 3: Cross multiply
    117,145.60x = 175,718.40 × 115,590.40
  4. Step 4: Simplify right side
    117,145.60x = 20,311,360,143.36
  5. Step 5: Solve for x
    x = 20,311,360,143.36/117,145.60
  6. Step 6: Final answer
    x = 173,385.60

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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.