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Finding the Fourth Proportional to 140,364.20, 193,702.20 and 76,702.40

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Solution

The fourth proportional to 140,364.20, 193,702.20 and 76,702.40 is: 105,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,364.20 : 193,702.20 = 76,702.40 : x
  2. Step 2: Convert to fraction form
    140,364.20/193,702.20 = 76,702.40/x
  3. Step 3: Cross multiply
    140,364.20x = 193,702.20 × 76,702.40
  4. Step 4: Simplify right side
    140,364.20x = 14,857,423,625.28
  5. Step 5: Solve for x
    x = 14,857,423,625.28/140,364.20
  6. Step 6: Final answer
    x = 105,849.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.