Home / 145,635,190.80-218,305,819.80-72,739,856.40

Finding the Fourth Proportional to 145,635,190.80, 218,305,819.80 and 72,739,856.40

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Solution

The fourth proportional to 145,635,190.80, 218,305,819.80 and 72,739,856.40 is: 109,036,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,635,190.80 : 218,305,819.80 = 72,739,856.40 : x
  2. Step 2: Convert to fraction form
    145,635,190.80/218,305,819.80 = 72,739,856.40/x
  3. Step 3: Cross multiply
    145,635,190.80x = 218,305,819.80 × 72,739,856.40
  4. Step 4: Simplify right side
    145,635,190.80x = 15,879,533,983,536,278
  5. Step 5: Solve for x
    x = 15,879,533,983,536,278/145,635,190.80
  6. Step 6: Final answer
    x = 109,036,379.85

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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.