Home / 123,659,999.40-185,489,999.10-42,889,132.20

Finding the Fourth Proportional to 123,659,999.40, 185,489,999.10 and 42,889,132.20

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Solution

The fourth proportional to 123,659,999.40, 185,489,999.10 and 42,889,132.20 is: 64,333,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,659,999.40 : 185,489,999.10 = 42,889,132.20 : x
  2. Step 2: Convert to fraction form
    123,659,999.40/185,489,999.10 = 42,889,132.20/x
  3. Step 3: Cross multiply
    123,659,999.40x = 185,489,999.10 × 42,889,132.20
  4. Step 4: Simplify right side
    123,659,999.40x = 7,955,505,093,177,781
  5. Step 5: Solve for x
    x = 7,955,505,093,177,781/123,659,999.40
  6. Step 6: Final answer
    x = 64,333,698.30

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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.