Home / 138,997,837.64-191,817,039.66-77,118,028.58

Finding the Fourth Proportional to 138,997,837.64, 191,817,039.66 and 77,118,028.58

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Solution

The fourth proportional to 138,997,837.64, 191,817,039.66 and 77,118,028.58 is: 106,422,892.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,997,837.64 : 191,817,039.66 = 77,118,028.58 : x
  2. Step 2: Convert to fraction form
    138,997,837.64/191,817,039.66 = 77,118,028.58/x
  3. Step 3: Cross multiply
    138,997,837.64x = 191,817,039.66 × 77,118,028.58
  4. Step 4: Simplify right side
    138,997,837.64x = 14,792,551,946,630,872
  5. Step 5: Solve for x
    x = 14,792,551,946,630,872/138,997,837.64
  6. Step 6: Final answer
    x = 106,422,892.60

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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.