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Finding the Fourth Proportional to 127,861.60, 191,630.40 and 48,870.40

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Solution

The fourth proportional to 127,861.60, 191,630.40 and 48,870.40 is: 73,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,861.60 : 191,630.40 = 48,870.40 : x
  2. Step 2: Convert to fraction form
    127,861.60/191,630.40 = 48,870.40/x
  3. Step 3: Cross multiply
    127,861.60x = 191,630.40 × 48,870.40
  4. Step 4: Simplify right side
    127,861.60x = 9,365,054,300.16
  5. Step 5: Solve for x
    x = 9,365,054,300.16/127,861.60
  6. Step 6: Final answer
    x = 73,243.68

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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.