Home / 102,129,678.57-140,938,795.67-55,719,936.60

Finding the Fourth Proportional to 102,129,678.57, 140,938,795.67 and 55,719,936.60

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Solution

The fourth proportional to 102,129,678.57, 140,938,795.67 and 55,719,936.60 is: 76,893,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,129,678.57 : 140,938,795.67 = 55,719,936.60 : x
  2. Step 2: Convert to fraction form
    102,129,678.57/140,938,795.67 = 55,719,936.60/x
  3. Step 3: Cross multiply
    102,129,678.57x = 140,938,795.67 × 55,719,936.60
  4. Step 4: Simplify right side
    102,129,678.57x = 7,853,100,759,212,754
  5. Step 5: Solve for x
    x = 7,853,100,759,212,754/102,129,678.57
  6. Step 6: Final answer
    x = 76,893,424.80

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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.