Home / 111,679,430.90-167,325,010.39-78,372,004.25

Finding the Fourth Proportional to 111,679,430.90, 167,325,010.39 and 78,372,004.25

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Solution

The fourth proportional to 111,679,430.90, 167,325,010.39 and 78,372,004.25 is: 117,421,769.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,679,430.90 : 167,325,010.39 = 78,372,004.25 : x
  2. Step 2: Convert to fraction form
    111,679,430.90/167,325,010.39 = 78,372,004.25/x
  3. Step 3: Cross multiply
    111,679,430.90x = 167,325,010.39 × 78,372,004.25
  4. Step 4: Simplify right side
    111,679,430.90x = 13,113,596,425,416,374
  5. Step 5: Solve for x
    x = 13,113,596,425,416,374/111,679,430.90
  6. Step 6: Final answer
    x = 117,421,769.79

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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.