Home / 142,371.80-196,455.96-78,700.92

Finding the Fourth Proportional to 142,371.80, 196,455.96 and 78,700.92

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Solution

The fourth proportional to 142,371.80, 196,455.96 and 78,700.92 is: 108,597.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,371.80 : 196,455.96 = 78,700.92 : x
  2. Step 2: Convert to fraction form
    142,371.80/196,455.96 = 78,700.92/x
  3. Step 3: Cross multiply
    142,371.80x = 196,455.96 × 78,700.92
  4. Step 4: Simplify right side
    142,371.80x = 15,461,264,791.48
  5. Step 5: Solve for x
    x = 15,461,264,791.48/142,371.80
  6. Step 6: Final answer
    x = 108,597.80

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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.