Home / 138,485,429.65-191,093,243.20-79,767,191.53

Finding the Fourth Proportional to 138,485,429.65, 191,093,243.20 and 79,767,191.53

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Solution

The fourth proportional to 138,485,429.65, 191,093,243.20 and 79,767,191.53 is: 110,069,134.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,485,429.65 : 191,093,243.20 = 79,767,191.53 : x
  2. Step 2: Convert to fraction form
    138,485,429.65/191,093,243.20 = 79,767,191.53/x
  3. Step 3: Cross multiply
    138,485,429.65x = 191,093,243.20 × 79,767,191.53
  4. Step 4: Simplify right side
    138,485,429.65x = 15,242,971,330,423,270
  5. Step 5: Solve for x
    x = 15,242,971,330,423,270/138,485,429.65
  6. Step 6: Final answer
    x = 110,069,134.12

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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.