Home / 155,830,836.69-215,052,884.69-86,215,083.75

Finding the Fourth Proportional to 155,830,836.69, 215,052,884.69 and 86,215,083.75

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Solution

The fourth proportional to 155,830,836.69, 215,052,884.69 and 86,215,083.75 is: 118,980,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,830,836.69 : 215,052,884.69 = 86,215,083.75 : x
  2. Step 2: Convert to fraction form
    155,830,836.69/215,052,884.69 = 86,215,083.75/x
  3. Step 3: Cross multiply
    155,830,836.69x = 215,052,884.69 × 86,215,083.75
  4. Step 4: Simplify right side
    155,830,836.69x = 18,540,802,463,796,368
  5. Step 5: Solve for x
    x = 18,540,802,463,796,368/155,830,836.69
  6. Step 6: Final answer
    x = 118,980,317.74

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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.