Home / 136,454.96-188,308.20-79,105.40

Finding the Fourth Proportional to 136,454.96, 188,308.20 and 79,105.40

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Solution

The fourth proportional to 136,454.96, 188,308.20 and 79,105.40 is: 109,165.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,454.96 : 188,308.20 = 79,105.40 : x
  2. Step 2: Convert to fraction form
    136,454.96/188,308.20 = 79,105.40/x
  3. Step 3: Cross multiply
    136,454.96x = 188,308.20 × 79,105.40
  4. Step 4: Simplify right side
    136,454.96x = 14,896,195,484.28
  5. Step 5: Solve for x
    x = 14,896,195,484.28/136,454.96
  6. Step 6: Final answer
    x = 109,165.66

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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.