Home / 111,679,429.90-167,325,008.89-78,372,003.25

Finding the Fourth Proportional to 111,679,429.90, 167,325,008.89 and 78,372,003.25

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Solution

The fourth proportional to 111,679,429.90, 167,325,008.89 and 78,372,003.25 is: 117,421,768.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,679,429.90 : 167,325,008.89 = 78,372,003.25 : x
  2. Step 2: Convert to fraction form
    111,679,429.90/167,325,008.89 = 78,372,003.25/x
  3. Step 3: Cross multiply
    111,679,429.90x = 167,325,008.89 × 78,372,003.25
  4. Step 4: Simplify right side
    111,679,429.90x = 13,113,596,140,533,358
  5. Step 5: Solve for x
    x = 13,113,596,140,533,358/111,679,429.90
  6. Step 6: Final answer
    x = 117,421,768.29

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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.