Home / 189,813.90-284,830.20-71,570.10

Finding the Fourth Proportional to 189,813.90, 284,830.20 and 71,570.10

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Solution

The fourth proportional to 189,813.90, 284,830.20 and 71,570.10 is: 107,396.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,813.90 : 284,830.20 = 71,570.10 : x
  2. Step 2: Convert to fraction form
    189,813.90/284,830.20 = 71,570.10/x
  3. Step 3: Cross multiply
    189,813.90x = 284,830.20 × 71,570.10
  4. Step 4: Simplify right side
    189,813.90x = 20,385,325,897.02
  5. Step 5: Solve for x
    x = 20,385,325,897.02/189,813.90
  6. Step 6: Final answer
    x = 107,396.38

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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.