Home / 119,890.80-165,347.73-72,135.23

Finding the Fourth Proportional to 119,890.80, 165,347.73 and 72,135.23

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Solution

The fourth proportional to 119,890.80, 165,347.73 and 72,135.23 is: 99,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,890.80 : 165,347.73 = 72,135.23 : x
  2. Step 2: Convert to fraction form
    119,890.80/165,347.73 = 72,135.23/x
  3. Step 3: Cross multiply
    119,890.80x = 165,347.73 × 72,135.23
  4. Step 4: Simplify right side
    119,890.80x = 11,927,395,706.79
  5. Step 5: Solve for x
    x = 11,927,395,706.79/119,890.80
  6. Step 6: Final answer
    x = 99,485.50

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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.