Home / 130,645.66-180,323.67-80,315.50

Finding the Fourth Proportional to 130,645.66, 180,323.67 and 80,315.50

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Solution

The fourth proportional to 130,645.66, 180,323.67 and 80,315.50 is: 110,855.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,645.66 : 180,323.67 = 80,315.50 : x
  2. Step 2: Convert to fraction form
    130,645.66/180,323.67 = 80,315.50/x
  3. Step 3: Cross multiply
    130,645.66x = 180,323.67 × 80,315.50
  4. Step 4: Simplify right side
    130,645.66x = 14,482,785,717.89
  5. Step 5: Solve for x
    x = 14,482,785,717.89/130,645.66
  6. Step 6: Final answer
    x = 110,855.47

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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.