Home / 136,215.12-187,973.28-75,785.88

Finding the Fourth Proportional to 136,215.12, 187,973.28 and 75,785.88

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Solution

The fourth proportional to 136,215.12, 187,973.28 and 75,785.88 is: 104,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,215.12 : 187,973.28 = 75,785.88 : x
  2. Step 2: Convert to fraction form
    136,215.12/187,973.28 = 75,785.88/x
  3. Step 3: Cross multiply
    136,215.12x = 187,973.28 × 75,785.88
  4. Step 4: Simplify right side
    136,215.12x = 14,245,720,441.29
  5. Step 5: Solve for x
    x = 14,245,720,441.29/136,215.12
  6. Step 6: Final answer
    x = 104,582.52

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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.