Home / 72,136.05-108,210.23-18,835.10

Finding the Fourth Proportional to 72,136.05, 108,210.23 and 18,835.10

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Solution

The fourth proportional to 72,136.05, 108,210.23 and 18,835.10 is: 28,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,136.05 : 108,210.23 = 18,835.10 : x
  2. Step 2: Convert to fraction form
    72,136.05/108,210.23 = 18,835.10/x
  3. Step 3: Cross multiply
    72,136.05x = 108,210.23 × 18,835.10
  4. Step 4: Simplify right side
    72,136.05x = 2,038,149,867.85
  5. Step 5: Solve for x
    x = 2,038,149,867.85/72,136.05
  6. Step 6: Final answer
    x = 28,254.25

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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.