Home / 138,485,428.65-191,093,241.83-79,767,190.53

Finding the Fourth Proportional to 138,485,428.65, 191,093,241.83 and 79,767,190.53

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Solution

The fourth proportional to 138,485,428.65, 191,093,241.83 and 79,767,190.53 is: 110,069,132.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,428.65 : 191,093,241.83 = 79,767,190.53 : x
  2. Step 2: Convert to fraction form
    138,485,428.65/191,093,241.83 = 79,767,190.53/x
  3. Step 3: Cross multiply
    138,485,428.65x = 191,093,241.83 × 79,767,190.53
  4. Step 4: Simplify right side
    138,485,428.65x = 15,242,971,029,650,140
  5. Step 5: Solve for x
    x = 15,242,971,029,650,140/138,485,428.65
  6. Step 6: Final answer
    x = 110,069,132.75

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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.