Home / 122,490,221.20-183,735,331.80-77,140,589.20

Finding the Fourth Proportional to 122,490,221.20, 183,735,331.80 and 77,140,589.20

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Solution

The fourth proportional to 122,490,221.20, 183,735,331.80 and 77,140,589.20 is: 115,710,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,490,221.20 : 183,735,331.80 = 77,140,589.20 : x
  2. Step 2: Convert to fraction form
    122,490,221.20/183,735,331.80 = 77,140,589.20/x
  3. Step 3: Cross multiply
    122,490,221.20x = 183,735,331.80 × 77,140,589.20
  4. Step 4: Simplify right side
    122,490,221.20x = 14,173,451,751,909,498
  5. Step 5: Solve for x
    x = 14,173,451,751,909,498/122,490,221.20
  6. Step 6: Final answer
    x = 115,710,883.80

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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.