Home / 122,609,677.32-169,287,796.80-78,669,873

Finding the Fourth Proportional to 122,609,677.32, 169,287,796.80 and 78,669,873

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Solution

The fourth proportional to 122,609,677.32, 169,287,796.80 and 78,669,873 is: 108,619,888.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,609,677.32 : 169,287,796.80 = 78,669,873 : x
  2. Step 2: Convert to fraction form
    122,609,677.32/169,287,796.80 = 78,669,873/x
  3. Step 3: Cross multiply
    122,609,677.32x = 169,287,796.80 × 78,669,873
  4. Step 4: Simplify right side
    122,609,677.32x = 13,317,849,474,705,808
  5. Step 5: Solve for x
    x = 13,317,849,474,705,808/122,609,677.32
  6. Step 6: Final answer
    x = 108,619,888.46

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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.