Home / 136,430.36-188,271.06-76,000.88

Finding the Fourth Proportional to 136,430.36, 188,271.06 and 76,000.88

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Solution

The fourth proportional to 136,430.36, 188,271.06 and 76,000.88 is: 104,879.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,430.36 : 188,271.06 = 76,000.88 : x
  2. Step 2: Convert to fraction form
    136,430.36/188,271.06 = 76,000.88/x
  3. Step 3: Cross multiply
    136,430.36x = 188,271.06 × 76,000.88
  4. Step 4: Simplify right side
    136,430.36x = 14,308,766,238.53
  5. Step 5: Solve for x
    x = 14,308,766,238.53/136,430.36
  6. Step 6: Final answer
    x = 104,879.63

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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.