Home / 119,787.80-165,374.88-79,570.50

Finding the Fourth Proportional to 119,787.80, 165,374.88 and 79,570.50

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Solution

The fourth proportional to 119,787.80, 165,374.88 and 79,570.50 is: 109,852.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,787.80 : 165,374.88 = 79,570.50 : x
  2. Step 2: Convert to fraction form
    119,787.80/165,374.88 = 79,570.50/x
  3. Step 3: Cross multiply
    119,787.80x = 165,374.88 × 79,570.50
  4. Step 4: Simplify right side
    119,787.80x = 13,158,961,889.04
  5. Step 5: Solve for x
    x = 13,158,961,889.04/119,787.80
  6. Step 6: Final answer
    x = 109,852.27

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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.