Home / 142,933.80-197,235.72-79,271.40

Finding the Fourth Proportional to 142,933.80, 197,235.72 and 79,271.40

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Solution

The fourth proportional to 142,933.80, 197,235.72 and 79,271.40 is: 109,387.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,933.80 : 197,235.72 = 79,271.40 : x
  2. Step 2: Convert to fraction form
    142,933.80/197,235.72 = 79,271.40/x
  3. Step 3: Cross multiply
    142,933.80x = 197,235.72 × 79,271.40
  4. Step 4: Simplify right side
    142,933.80x = 15,635,151,654.41
  5. Step 5: Solve for x
    x = 15,635,151,654.41/142,933.80
  6. Step 6: Final answer
    x = 109,387.36

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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.