Home / 142,004.41-195,966.75-78,342.19

Finding the Fourth Proportional to 142,004.41, 195,966.75 and 78,342.19

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Solution

The fourth proportional to 142,004.41, 195,966.75 and 78,342.19 is: 108,112.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,004.41 : 195,966.75 = 78,342.19 : x
  2. Step 2: Convert to fraction form
    142,004.41/195,966.75 = 78,342.19/x
  3. Step 3: Cross multiply
    142,004.41x = 195,966.75 × 78,342.19
  4. Step 4: Simplify right side
    142,004.41x = 15,352,464,362.18
  5. Step 5: Solve for x
    x = 15,352,464,362.18/142,004.41
  6. Step 6: Final answer
    x = 108,112.59

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1.5x scale

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.