Home / 142,004.57-195,968.58-78,342.35

Finding the Fourth Proportional to 142,004.57, 195,968.58 and 78,342.35

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Solution

The fourth proportional to 142,004.57, 195,968.58 and 78,342.35 is: 108,113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,004.57 : 195,968.58 = 78,342.35 : x
  2. Step 2: Convert to fraction form
    142,004.57/195,968.58 = 78,342.35/x
  3. Step 3: Cross multiply
    142,004.57x = 195,968.58 × 78,342.35
  4. Step 4: Simplify right side
    142,004.57x = 15,352,639,083.36
  5. Step 5: Solve for x
    x = 15,352,639,083.36/142,004.57
  6. Step 6: Final answer
    x = 108,113.70

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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.