Home / 121,756,290.94-168,023,905.77-66,001,538.89

Finding the Fourth Proportional to 121,756,290.94, 168,023,905.77 and 66,001,538.89

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Solution

The fourth proportional to 121,756,290.94, 168,023,905.77 and 66,001,538.89 is: 91,082,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,756,290.94 : 168,023,905.77 = 66,001,538.89 : x
  2. Step 2: Convert to fraction form
    121,756,290.94/168,023,905.77 = 66,001,538.89/x
  3. Step 3: Cross multiply
    121,756,290.94x = 168,023,905.77 × 66,001,538.89
  4. Step 4: Simplify right side
    121,756,290.94x = 11,089,836,351,128,352
  5. Step 5: Solve for x
    x = 11,089,836,351,128,352/121,756,290.94
  6. Step 6: Final answer
    x = 91,082,245.24

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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.