Home / 138,149,938.17-190,732,953.72-87,942,485.64

Finding the Fourth Proportional to 138,149,938.17, 190,732,953.72 and 87,942,485.64

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Solution

The fourth proportional to 138,149,938.17, 190,732,953.72 and 87,942,485.64 is: 121,415,400.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,149,938.17 : 190,732,953.72 = 87,942,485.64 : x
  2. Step 2: Convert to fraction form
    138,149,938.17/190,732,953.72 = 87,942,485.64/x
  3. Step 3: Cross multiply
    138,149,938.17x = 190,732,953.72 × 87,942,485.64
  4. Step 4: Simplify right side
    138,149,938.17x = 16,773,530,043,595,884
  5. Step 5: Solve for x
    x = 16,773,530,043,595,884/138,149,938.17
  6. Step 6: Final answer
    x = 121,415,400.29

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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.