Home / 165,958,891.20-248,938,336.80-79,865,449.20

Finding the Fourth Proportional to 165,958,891.20, 248,938,336.80 and 79,865,449.20

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Solution

The fourth proportional to 165,958,891.20, 248,938,336.80 and 79,865,449.20 is: 119,798,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,958,891.20 : 248,938,336.80 = 79,865,449.20 : x
  2. Step 2: Convert to fraction form
    165,958,891.20/248,938,336.80 = 79,865,449.20/x
  3. Step 3: Cross multiply
    165,958,891.20x = 248,938,336.80 × 79,865,449.20
  4. Step 4: Simplify right side
    165,958,891.20x = 19,881,572,091,632,892
  5. Step 5: Solve for x
    x = 19,881,572,091,632,892/165,958,891.20
  6. Step 6: Final answer
    x = 119,798,173.80

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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.