Home / 142,371.36-196,454.88-78,710.40

Finding the Fourth Proportional to 142,371.36, 196,454.88 and 78,710.40

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Solution

The fourth proportional to 142,371.36, 196,454.88 and 78,710.40 is: 108,610.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,371.36 : 196,454.88 = 78,710.40 : x
  2. Step 2: Convert to fraction form
    142,371.36/196,454.88 = 78,710.40/x
  3. Step 3: Cross multiply
    142,371.36x = 196,454.88 × 78,710.40
  4. Step 4: Simplify right side
    142,371.36x = 15,463,042,186.75
  5. Step 5: Solve for x
    x = 15,463,042,186.75/142,371.36
  6. Step 6: Final answer
    x = 108,610.62

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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.