Home / 136,230.72-188,002.08-76,628.80

Finding the Fourth Proportional to 136,230.72, 188,002.08 and 76,628.80

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Solution

The fourth proportional to 136,230.72, 188,002.08 and 76,628.80 is: 105,749.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,230.72 : 188,002.08 = 76,628.80 : x
  2. Step 2: Convert to fraction form
    136,230.72/188,002.08 = 76,628.80/x
  3. Step 3: Cross multiply
    136,230.72x = 188,002.08 × 76,628.80
  4. Step 4: Simplify right side
    136,230.72x = 14,406,373,787.90
  5. Step 5: Solve for x
    x = 14,406,373,787.90/136,230.72
  6. Step 6: Final answer
    x = 105,749.82

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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.