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Finding the Fourth Proportional to 165,888,653.80, 248,832,980.70 and 80,953,997.80

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Solution

The fourth proportional to 165,888,653.80, 248,832,980.70 and 80,953,997.80 is: 121,430,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,888,653.80 : 248,832,980.70 = 80,953,997.80 : x
  2. Step 2: Convert to fraction form
    165,888,653.80/248,832,980.70 = 80,953,997.80/x
  3. Step 3: Cross multiply
    165,888,653.80x = 248,832,980.70 × 80,953,997.80
  4. Step 4: Simplify right side
    165,888,653.80x = 20,144,024,572,155,240
  5. Step 5: Solve for x
    x = 20,144,024,572,155,240/165,888,653.80
  6. Step 6: Final answer
    x = 121,430,996.70

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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.