Home / 138,739,341.48-191,446,338.88-76,848,116.28

Finding the Fourth Proportional to 138,739,341.48, 191,446,338.88 and 76,848,116.28

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Solution

The fourth proportional to 138,739,341.48, 191,446,338.88 and 76,848,116.28 is: 106,042,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,739,341.48 : 191,446,338.88 = 76,848,116.28 : x
  2. Step 2: Convert to fraction form
    138,739,341.48/191,446,338.88 = 76,848,116.28/x
  3. Step 3: Cross multiply
    138,739,341.48x = 191,446,338.88 × 76,848,116.28
  4. Step 4: Simplify right side
    138,739,341.48x = 14,712,290,511,630,524
  5. Step 5: Solve for x
    x = 14,712,290,511,630,524/138,739,341.48
  6. Step 6: Final answer
    x = 106,042,672.21

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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.