Home / 115,231,162.36-172,670,041.98-78,296,012.32

Finding the Fourth Proportional to 115,231,162.36, 172,670,041.98 and 78,296,012.32

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Solution

The fourth proportional to 115,231,162.36, 172,670,041.98 and 78,296,012.32 is: 117,323,955.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,231,162.36 : 172,670,041.98 = 78,296,012.32 : x
  2. Step 2: Convert to fraction form
    115,231,162.36/172,670,041.98 = 78,296,012.32/x
  3. Step 3: Cross multiply
    115,231,162.36x = 172,670,041.98 × 78,296,012.32
  4. Step 4: Simplify right side
    115,231,162.36x = 13,519,375,734,160,996
  5. Step 5: Solve for x
    x = 13,519,375,734,160,996/115,231,162.36
  6. Step 6: Final answer
    x = 117,323,955.23

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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.