Home / 128,455,074.82-177,268,178.30-69,717,740.75

Finding the Fourth Proportional to 128,455,074.82, 177,268,178.30 and 69,717,740.75

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Solution

The fourth proportional to 128,455,074.82, 177,268,178.30 and 69,717,740.75 is: 96,210,577.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455,074.82 : 177,268,178.30 = 69,717,740.75 : x
  2. Step 2: Convert to fraction form
    128,455,074.82/177,268,178.30 = 69,717,740.75/x
  3. Step 3: Cross multiply
    128,455,074.82x = 177,268,178.30 × 69,717,740.75
  4. Step 4: Simplify right side
    128,455,074.82x = 12,358,736,897,374,002
  5. Step 5: Solve for x
    x = 12,358,736,897,374,002/128,455,074.82
  6. Step 6: Final answer
    x = 96,210,577.24

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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.