Home / 186,623,999.40-279,935,999.10-129,100,261.80

Finding the Fourth Proportional to 186,623,999.40, 279,935,999.10 and 129,100,261.80

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Solution

The fourth proportional to 186,623,999.40, 279,935,999.10 and 129,100,261.80 is: 193,650,392.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,623,999.40 : 279,935,999.10 = 129,100,261.80 : x
  2. Step 2: Convert to fraction form
    186,623,999.40/279,935,999.10 = 129,100,261.80/x
  3. Step 3: Cross multiply
    186,623,999.40x = 279,935,999.10 × 129,100,261.80
  4. Step 4: Simplify right side
    186,623,999.40x = 36,139,810,771,054,568
  5. Step 5: Solve for x
    x = 36,139,810,771,054,568/186,623,999.40
  6. Step 6: Final answer
    x = 193,650,392.70

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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.