Home / 145,205,868.62-200,382,989.30-79,126,162.53

Finding the Fourth Proportional to 145,205,868.62, 200,382,989.30 and 79,126,162.53

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Solution

The fourth proportional to 145,205,868.62, 200,382,989.30 and 79,126,162.53 is: 109,193,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,205,868.62 : 200,382,989.30 = 79,126,162.53 : x
  2. Step 2: Convert to fraction form
    145,205,868.62/200,382,989.30 = 79,126,162.53/x
  3. Step 3: Cross multiply
    145,205,868.62x = 200,382,989.30 × 79,126,162.53
  4. Step 4: Simplify right side
    145,205,868.62x = 15,855,536,979,646,888
  5. Step 5: Solve for x
    x = 15,855,536,979,646,888/145,205,868.62
  6. Step 6: Final answer
    x = 109,193,499.76

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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.