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Finding the Fourth Proportional to 145,512.60, 218,153.70 and 79,848.60

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Solution

The fourth proportional to 145,512.60, 218,153.70 and 79,848.60 is: 119,709.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,512.60 : 218,153.70 = 79,848.60 : x
  2. Step 2: Convert to fraction form
    145,512.60/218,153.70 = 79,848.60/x
  3. Step 3: Cross multiply
    145,512.60x = 218,153.70 × 79,848.60
  4. Step 4: Simplify right side
    145,512.60x = 17,419,267,529.82
  5. Step 5: Solve for x
    x = 17,419,267,529.82/145,512.60
  6. Step 6: Final answer
    x = 119,709.69

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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.