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Finding the Fourth Proportional to 145,856.60, 218,768.70 and 119,515.40

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Solution

The fourth proportional to 145,856.60, 218,768.70 and 119,515.40 is: 179,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,856.60 : 218,768.70 = 119,515.40 : x
  2. Step 2: Convert to fraction form
    145,856.60/218,768.70 = 119,515.40/x
  3. Step 3: Cross multiply
    145,856.60x = 218,768.70 × 119,515.40
  4. Step 4: Simplify right side
    145,856.60x = 26,146,228,687.98
  5. Step 5: Solve for x
    x = 26,146,228,687.98/145,856.60
  6. Step 6: Final answer
    x = 179,259.83

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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.