Home / 155,382,675.21-214,428,112.79-85,768,069.23

Finding the Fourth Proportional to 155,382,675.21, 214,428,112.79 and 85,768,069.23

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Solution

The fourth proportional to 155,382,675.21, 214,428,112.79 and 85,768,069.23 is: 118,359,947.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,382,675.21 : 214,428,112.79 = 85,768,069.23 : x
  2. Step 2: Convert to fraction form
    155,382,675.21/214,428,112.79 = 85,768,069.23/x
  3. Step 3: Cross multiply
    155,382,675.21x = 214,428,112.79 × 85,768,069.23
  4. Step 4: Simplify right side
    155,382,675.21x = 18,391,085,222,202,128
  5. Step 5: Solve for x
    x = 18,391,085,222,202,128/155,382,675.21
  6. Step 6: Final answer
    x = 118,359,947.13

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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.