Home / 136,862,898.75-188,824,299.80-78,083,337.15

Finding the Fourth Proportional to 136,862,898.75, 188,824,299.80 and 78,083,337.15

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Solution

The fourth proportional to 136,862,898.75, 188,824,299.80 and 78,083,337.15 is: 107,728,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,862,898.75 : 188,824,299.80 = 78,083,337.15 : x
  2. Step 2: Convert to fraction form
    136,862,898.75/188,824,299.80 = 78,083,337.15/x
  3. Step 3: Cross multiply
    136,862,898.75x = 188,824,299.80 × 78,083,337.15
  4. Step 4: Simplify right side
    136,862,898.75x = 14,744,031,463,005,660
  5. Step 5: Solve for x
    x = 14,744,031,463,005,660/136,862,898.75
  6. Step 6: Final answer
    x = 107,728,475.71

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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.