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Finding the Fourth Proportional to 103,565.40, 155,232.90 and 56,851.80

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Solution

The fourth proportional to 103,565.40, 155,232.90 and 56,851.80 is: 85,214.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,565.40 : 155,232.90 = 56,851.80 : x
  2. Step 2: Convert to fraction form
    103,565.40/155,232.90 = 56,851.80/x
  3. Step 3: Cross multiply
    103,565.40x = 155,232.90 × 56,851.80
  4. Step 4: Simplify right side
    103,565.40x = 8,825,269,784.22
  5. Step 5: Solve for x
    x = 8,825,269,784.22/103,565.40
  6. Step 6: Final answer
    x = 85,214.46

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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.