Home / 145,982.70-218,971.89-79,407.18

Finding the Fourth Proportional to 145,982.70, 218,971.89 and 79,407.18

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Solution

The fourth proportional to 145,982.70, 218,971.89 and 79,407.18 is: 119,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,982.70 : 218,971.89 = 79,407.18 : x
  2. Step 2: Convert to fraction form
    145,982.70/218,971.89 = 79,407.18/x
  3. Step 3: Cross multiply
    145,982.70x = 218,971.89 × 79,407.18
  4. Step 4: Simplify right side
    145,982.70x = 17,387,940,284.17
  5. Step 5: Solve for x
    x = 17,387,940,284.17/145,982.70
  6. Step 6: Final answer
    x = 119,109.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.