Home / 138,738,876.60-191,471,407.02-76,878,619.32

Finding the Fourth Proportional to 138,738,876.60, 191,471,407.02 and 76,878,619.32

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Solution

The fourth proportional to 138,738,876.60, 191,471,407.02 and 76,878,619.32 is: 106,099,009.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738,876.60 : 191,471,407.02 = 76,878,619.32 : x
  2. Step 2: Convert to fraction form
    138,738,876.60/191,471,407.02 = 76,878,619.32/x
  3. Step 3: Cross multiply
    138,738,876.60x = 191,471,407.02 × 76,878,619.32
  4. Step 4: Simplify right side
    138,738,876.60x = 14,720,057,410,955,356
  5. Step 5: Solve for x
    x = 14,720,057,410,955,356/138,738,876.60
  6. Step 6: Final answer
    x = 106,099,009.68

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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.