Home / 119,721.53-165,235.40-72,001.19

Finding the Fourth Proportional to 119,721.53, 165,235.40 and 72,001.19

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Solution

The fourth proportional to 119,721.53, 165,235.40 and 72,001.19 is: 99,373.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,721.53 : 165,235.40 = 72,001.19 : x
  2. Step 2: Convert to fraction form
    119,721.53/165,235.40 = 72,001.19/x
  3. Step 3: Cross multiply
    119,721.53x = 165,235.40 × 72,001.19
  4. Step 4: Simplify right side
    119,721.53x = 11,897,144,243.94
  5. Step 5: Solve for x
    x = 11,897,144,243.94/119,721.53
  6. Step 6: Final answer
    x = 99,373.48

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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.