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Finding the Fourth Proportional to 117,630.20, 176,153.70 and 75,445.40

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Solution

The fourth proportional to 117,630.20, 176,153.70 and 75,445.40 is: 112,981.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,630.20 : 176,153.70 = 75,445.40 : x
  2. Step 2: Convert to fraction form
    117,630.20/176,153.70 = 75,445.40/x
  3. Step 3: Cross multiply
    117,630.20x = 176,153.70 × 75,445.40
  4. Step 4: Simplify right side
    117,630.20x = 13,289,986,357.98
  5. Step 5: Solve for x
    x = 13,289,986,357.98/117,630.20
  6. Step 6: Final answer
    x = 112,981.07

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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.