Home / 138,247,998.70-190,785,050.61-75,528,159.03

Finding the Fourth Proportional to 138,247,998.70, 190,785,050.61 and 75,528,159.03

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Solution

The fourth proportional to 138,247,998.70, 190,785,050.61 and 75,528,159.03 is: 104,230,395.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,247,998.70 : 190,785,050.61 = 75,528,159.03 : x
  2. Step 2: Convert to fraction form
    138,247,998.70/190,785,050.61 = 75,528,159.03/x
  3. Step 3: Cross multiply
    138,247,998.70x = 190,785,050.61 × 75,528,159.03
  4. Step 4: Simplify right side
    138,247,998.70x = 14,409,643,641,687,112
  5. Step 5: Solve for x
    x = 14,409,643,641,687,112/138,247,998.70
  6. Step 6: Final answer
    x = 104,230,395.93

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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.