Home / 141,892.40-195,812.52-78,237.20

Finding the Fourth Proportional to 141,892.40, 195,812.52 and 78,237.20

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Solution

The fourth proportional to 141,892.40, 195,812.52 and 78,237.20 is: 107,967.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,892.40 : 195,812.52 = 78,237.20 : x
  2. Step 2: Convert to fraction form
    141,892.40/195,812.52 = 78,237.20/x
  3. Step 3: Cross multiply
    141,892.40x = 195,812.52 × 78,237.20
  4. Step 4: Simplify right side
    141,892.40x = 15,319,823,289.74
  5. Step 5: Solve for x
    x = 15,319,823,289.74/141,892.40
  6. Step 6: Final answer
    x = 107,967.89

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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.