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Finding the Fourth Proportional to 136,697,821.03, 188,642,993.03 and 74,818,159.59

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Solution

The fourth proportional to 136,697,821.03, 188,642,993.03 and 74,818,159.59 is: 103,249,060.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,697,821.03 : 188,642,993.03 = 74,818,159.59 : x
  2. Step 2: Convert to fraction form
    136,697,821.03/188,642,993.03 = 74,818,159.59/x
  3. Step 3: Cross multiply
    136,697,821.03x = 188,642,993.03 × 74,818,159.59
  4. Step 4: Simplify right side
    136,697,821.03x = 14,113,921,558,667,686
  5. Step 5: Solve for x
    x = 14,113,921,558,667,686/136,697,821.03
  6. Step 6: Final answer
    x = 103,249,060.24

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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.