Home / 135,642.96-187,197.48-79,042.32

Finding the Fourth Proportional to 135,642.96, 187,197.48 and 79,042.32

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Solution

The fourth proportional to 135,642.96, 187,197.48 and 79,042.32 is: 109,084.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,642.96 : 187,197.48 = 79,042.32 : x
  2. Step 2: Convert to fraction form
    135,642.96/187,197.48 = 79,042.32/x
  3. Step 3: Cross multiply
    135,642.96x = 187,197.48 × 79,042.32
  4. Step 4: Simplify right side
    135,642.96x = 14,796,523,117.35
  5. Step 5: Solve for x
    x = 14,796,523,117.35/135,642.96
  6. Step 6: Final answer
    x = 109,084.34

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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.