Home / 112,987,776.80-155,922,505.20-63,428,137.40

Finding the Fourth Proportional to 112,987,776.80, 155,922,505.20 and 63,428,137.40

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Solution

The fourth proportional to 112,987,776.80, 155,922,505.20 and 63,428,137.40 is: 87,530,477.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,987,776.80 : 155,922,505.20 = 63,428,137.40 : x
  2. Step 2: Convert to fraction form
    112,987,776.80/155,922,505.20 = 63,428,137.40/x
  3. Step 3: Cross multiply
    112,987,776.80x = 155,922,505.20 × 63,428,137.40
  4. Step 4: Simplify right side
    112,987,776.80x = 9,889,874,083,577,814
  5. Step 5: Solve for x
    x = 9,889,874,083,577,814/112,987,776.80
  6. Step 6: Final answer
    x = 87,530,477.75

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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.