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Finding the Fourth Proportional to 121,423.40, 182,135.10 and 117,967.40

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Solution

The fourth proportional to 121,423.40, 182,135.10 and 117,967.40 is: 176,951.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,423.40 : 182,135.10 = 117,967.40 : x
  2. Step 2: Convert to fraction form
    121,423.40/182,135.10 = 117,967.40/x
  3. Step 3: Cross multiply
    121,423.40x = 182,135.10 × 117,967.40
  4. Step 4: Simplify right side
    121,423.40x = 21,486,004,195.74
  5. Step 5: Solve for x
    x = 21,486,004,195.74/121,423.40
  6. Step 6: Final answer
    x = 176,951.10

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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.