Home / 197,139.20-295,708.80-72,454.40

Finding the Fourth Proportional to 197,139.20, 295,708.80 and 72,454.40

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Solution

The fourth proportional to 197,139.20, 295,708.80 and 72,454.40 is: 108,681.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,139.20 : 295,708.80 = 72,454.40 : x
  2. Step 2: Convert to fraction form
    197,139.20/295,708.80 = 72,454.40/x
  3. Step 3: Cross multiply
    197,139.20x = 295,708.80 × 72,454.40
  4. Step 4: Simplify right side
    197,139.20x = 21,425,403,678.72
  5. Step 5: Solve for x
    x = 21,425,403,678.72/197,139.20
  6. Step 6: Final answer
    x = 108,681.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.