Home / 138,312,164.49-190,871,382.11-75,589,548.81

Finding the Fourth Proportional to 138,312,164.49, 190,871,382.11 and 75,589,548.81

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Solution

The fourth proportional to 138,312,164.49, 190,871,382.11 and 75,589,548.81 is: 104,313,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,312,164.49 : 190,871,382.11 = 75,589,548.81 : x
  2. Step 2: Convert to fraction form
    138,312,164.49/190,871,382.11 = 75,589,548.81/x
  3. Step 3: Cross multiply
    138,312,164.49x = 190,871,382.11 × 75,589,548.81
  4. Step 4: Simplify right side
    138,312,164.49x = 14,427,881,654,436,008
  5. Step 5: Solve for x
    x = 14,427,881,654,436,008/138,312,164.49
  6. Step 6: Final answer
    x = 104,313,902.60

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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.