Home / 138,485,423.78-191,093,235.08-79,767,185.66

Finding the Fourth Proportional to 138,485,423.78, 191,093,235.08 and 79,767,185.66

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Solution

The fourth proportional to 138,485,423.78, 191,093,235.08 and 79,767,185.66 is: 110,069,126.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,423.78 : 191,093,235.08 = 79,767,185.66 : x
  2. Step 2: Convert to fraction form
    138,485,423.78/191,093,235.08 = 79,767,185.66/x
  3. Step 3: Cross multiply
    138,485,423.78x = 191,093,235.08 × 79,767,185.66
  4. Step 4: Simplify right side
    138,485,423.78x = 15,242,969,559,642,082
  5. Step 5: Solve for x
    x = 15,242,969,559,642,082/138,485,423.78
  6. Step 6: Final answer
    x = 110,069,126.01

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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.