Home / 121,983,430.88-168,337,135.48-66,979,287.36

Finding the Fourth Proportional to 121,983,430.88, 168,337,135.48 and 66,979,287.36

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Solution

The fourth proportional to 121,983,430.88, 168,337,135.48 and 66,979,287.36 is: 92,431,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,983,430.88 : 168,337,135.48 = 66,979,287.36 : x
  2. Step 2: Convert to fraction form
    121,983,430.88/168,337,135.48 = 66,979,287.36/x
  3. Step 3: Cross multiply
    121,983,430.88x = 168,337,135.48 × 66,979,287.36
  4. Step 4: Simplify right side
    121,983,430.88x = 11,275,101,370,674,170
  5. Step 5: Solve for x
    x = 11,275,101,370,674,170/121,983,430.88
  6. Step 6: Final answer
    x = 92,431,417.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.