Home / 115,772.07-159,612.31-83,479.67

Finding the Fourth Proportional to 115,772.07, 159,612.31 and 83,479.67

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Solution

The fourth proportional to 115,772.07, 159,612.31 and 83,479.67 is: 115,091.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,772.07 : 159,612.31 = 83,479.67 : x
  2. Step 2: Convert to fraction form
    115,772.07/159,612.31 = 83,479.67/x
  3. Step 3: Cross multiply
    115,772.07x = 159,612.31 × 83,479.67
  4. Step 4: Simplify right side
    115,772.07x = 13,324,381,751.28
  5. Step 5: Solve for x
    x = 13,324,381,751.28/115,772.07
  6. Step 6: Final answer
    x = 115,091.50

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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.