Home / 138,825,712.80-208,238,569.20-102,993,904.80

Finding the Fourth Proportional to 138,825,712.80, 208,238,569.20 and 102,993,904.80

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Solution

The fourth proportional to 138,825,712.80, 208,238,569.20 and 102,993,904.80 is: 154,490,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,825,712.80 : 208,238,569.20 = 102,993,904.80 : x
  2. Step 2: Convert to fraction form
    138,825,712.80/208,238,569.20 = 102,993,904.80/x
  3. Step 3: Cross multiply
    138,825,712.80x = 208,238,569.20 × 102,993,904.80
  4. Step 4: Simplify right side
    138,825,712.80x = 21,447,303,371,873,012
  5. Step 5: Solve for x
    x = 21,447,303,371,873,012/138,825,712.80
  6. Step 6: Final answer
    x = 154,490,857.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.