Home / 142,291.07-196,355.30-78,627.50

Finding the Fourth Proportional to 142,291.07, 196,355.30 and 78,627.50

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Solution

The fourth proportional to 142,291.07, 196,355.30 and 78,627.50 is: 108,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,291.07 : 196,355.30 = 78,627.50 : x
  2. Step 2: Convert to fraction form
    142,291.07/196,355.30 = 78,627.50/x
  3. Step 3: Cross multiply
    142,291.07x = 196,355.30 × 78,627.50
  4. Step 4: Simplify right side
    142,291.07x = 15,438,926,350.75
  5. Step 5: Solve for x
    x = 15,438,926,350.75/142,291.07
  6. Step 6: Final answer
    x = 108,502.43

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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.