Home / 138,219,107-190,741,111.92-75,495,191.90

Finding the Fourth Proportional to 138,219,107, 190,741,111.92 and 75,495,191.90

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Solution

The fourth proportional to 138,219,107, 190,741,111.92 and 75,495,191.90 is: 104,182,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219,107 : 190,741,111.92 = 75,495,191.90 : x
  2. Step 2: Convert to fraction form
    138,219,107/190,741,111.92 = 75,495,191.90/x
  3. Step 3: Cross multiply
    138,219,107x = 190,741,111.92 × 75,495,191.90
  4. Step 4: Simplify right side
    138,219,107x = 14,400,036,847,619,778
  5. Step 5: Solve for x
    x = 14,400,036,847,619,778/138,219,107
  6. Step 6: Final answer
    x = 104,182,678.94

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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.