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Finding the Fourth Proportional to 138,883,794.84, 191,571,798.06 and 89,238,845.16

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Solution

The fourth proportional to 138,883,794.84, 191,571,798.06 and 89,238,845.16 is: 123,093,166.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,883,794.84 : 191,571,798.06 = 89,238,845.16 : x
  2. Step 2: Convert to fraction form
    138,883,794.84/191,571,798.06 = 89,238,845.16/x
  3. Step 3: Cross multiply
    138,883,794.84x = 191,571,798.06 × 89,238,845.16
  4. Step 4: Simplify right side
    138,883,794.84x = 17,095,646,024,099,128
  5. Step 5: Solve for x
    x = 17,095,646,024,099,128/138,883,794.84
  6. Step 6: Final answer
    x = 123,093,166.08

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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.