Home / 136,741.50-188,712.74-76,323.90

Finding the Fourth Proportional to 136,741.50, 188,712.74 and 76,323.90

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Solution

The fourth proportional to 136,741.50, 188,712.74 and 76,323.90 is: 105,332.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,741.50 : 188,712.74 = 76,323.90 : x
  2. Step 2: Convert to fraction form
    136,741.50/188,712.74 = 76,323.90/x
  3. Step 3: Cross multiply
    136,741.50x = 188,712.74 × 76,323.90
  4. Step 4: Simplify right side
    136,741.50x = 14,403,291,914.87
  5. Step 5: Solve for x
    x = 14,403,291,914.87/136,741.50
  6. Step 6: Final answer
    x = 105,332.27

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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.