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Finding the Fourth Proportional to 140,360.60, 193,702.40 and 76,702.50

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Solution

The fourth proportional to 140,360.60, 193,702.40 and 76,702.50 is: 105,852.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,360.60 : 193,702.40 = 76,702.50 : x
  2. Step 2: Convert to fraction form
    140,360.60/193,702.40 = 76,702.50/x
  3. Step 3: Cross multiply
    140,360.60x = 193,702.40 × 76,702.50
  4. Step 4: Simplify right side
    140,360.60x = 14,857,457,952.49
  5. Step 5: Solve for x
    x = 14,857,457,952.49/140,360.60
  6. Step 6: Final answer
    x = 105,852.06

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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.