Home / 133,174.74-183,780.05-72,745.40

Finding the Fourth Proportional to 133,174.74, 183,780.05 and 72,745.40

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Solution

The fourth proportional to 133,174.74, 183,780.05 and 72,745.40 is: 100,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,174.74 : 183,780.05 = 72,745.40 : x
  2. Step 2: Convert to fraction form
    133,174.74/183,780.05 = 72,745.40/x
  3. Step 3: Cross multiply
    133,174.74x = 183,780.05 × 72,745.40
  4. Step 4: Simplify right side
    133,174.74x = 13,369,151,966.64
  5. Step 5: Solve for x
    x = 13,369,151,966.64/133,174.74
  6. Step 6: Final answer
    x = 100,388.05

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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.