Home / 155,945,352.09-215,196,060.07-85,367,308.89

Finding the Fourth Proportional to 155,945,352.09, 215,196,060.07 and 85,367,308.89

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Solution

The fourth proportional to 155,945,352.09, 215,196,060.07 and 85,367,308.89 is: 117,802,219.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,945,352.09 : 215,196,060.07 = 85,367,308.89 : x
  2. Step 2: Convert to fraction form
    155,945,352.09/215,196,060.07 = 85,367,308.89/x
  3. Step 3: Cross multiply
    155,945,352.09x = 215,196,060.07 × 85,367,308.89
  4. Step 4: Simplify right side
    155,945,352.09x = 18,370,708,531,693,268
  5. Step 5: Solve for x
    x = 18,370,708,531,693,268/155,945,352.09
  6. Step 6: Final answer
    x = 117,802,219.08

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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.