Home / 100,479,800.16-138,665,473.56-56,434,560.84

Finding the Fourth Proportional to 100,479,800.16, 138,665,473.56 and 56,434,560.84

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Solution

The fourth proportional to 100,479,800.16, 138,665,473.56 and 56,434,560.84 is: 77,881,575.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,479,800.16 : 138,665,473.56 = 56,434,560.84 : x
  2. Step 2: Convert to fraction form
    100,479,800.16/138,665,473.56 = 56,434,560.84/x
  3. Step 3: Cross multiply
    100,479,800.16x = 138,665,473.56 × 56,434,560.84
  4. Step 4: Simplify right side
    100,479,800.16x = 7,825,525,104,029,232
  5. Step 5: Solve for x
    x = 7,825,525,104,029,232/100,479,800.16
  6. Step 6: Final answer
    x = 77,881,575.12

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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.