Home / 138,149,936.54-190,732,951.48-87,942,484.01

Finding the Fourth Proportional to 138,149,936.54, 190,732,951.48 and 87,942,484.01

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Solution

The fourth proportional to 138,149,936.54, 190,732,951.48 and 87,942,484.01 is: 121,415,398.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,149,936.54 : 190,732,951.48 = 87,942,484.01 : x
  2. Step 2: Convert to fraction form
    138,149,936.54/190,732,951.48 = 87,942,484.01/x
  3. Step 3: Cross multiply
    138,149,936.54x = 190,732,951.48 × 87,942,484.01
  4. Step 4: Simplify right side
    138,149,936.54x = 16,773,529,535,710,006
  5. Step 5: Solve for x
    x = 16,773,529,535,710,006/138,149,936.54
  6. Step 6: Final answer
    x = 121,415,398.05

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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.