Home / 115,211.56-159,012.32-91,519.08

Finding the Fourth Proportional to 115,211.56, 159,012.32 and 91,519.08

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Solution

The fourth proportional to 115,211.56, 159,012.32 and 91,519.08 is: 126,312.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.56 : 159,012.32 = 91,519.08 : x
  2. Step 2: Convert to fraction form
    115,211.56/159,012.32 = 91,519.08/x
  3. Step 3: Cross multiply
    115,211.56x = 159,012.32 × 91,519.08
  4. Step 4: Simplify right side
    115,211.56x = 14,552,661,235.07
  5. Step 5: Solve for x
    x = 14,552,661,235.07/115,211.56
  6. Step 6: Final answer
    x = 126,312.51

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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.