Home / 104,530.32-156,532.80-81,173.04

Finding the Fourth Proportional to 104,530.32, 156,532.80 and 81,173.04

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Solution

The fourth proportional to 104,530.32, 156,532.80 and 81,173.04 is: 121,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,530.32 : 156,532.80 = 81,173.04 : x
  2. Step 2: Convert to fraction form
    104,530.32/156,532.80 = 81,173.04/x
  3. Step 3: Cross multiply
    104,530.32x = 156,532.80 × 81,173.04
  4. Step 4: Simplify right side
    104,530.32x = 12,706,243,235.71
  5. Step 5: Solve for x
    x = 12,706,243,235.71/104,530.32
  6. Step 6: Final answer
    x = 121,555.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.